Extreme Ultraviolet Lithographic Performance and Reaction Mechanism of Polymeric Resist─Utilizing Radical- and Acid-Amplified Cross-Linking

Bilal A. Naqvi, Satoshi Enomoto, Kohei Machida, Yui Takata, Takahiro Kozawa, Yusa Muroya, Stefan De Gendt, Danilo De Simone

Chemistry of Materials　Vol. 36　No. 3　p. 1459-1471　2024/02/01　Research paper (scientific journal)

Recombination Dynamics of Electron–Hole Pairs in TlBr Crystals Probed by Transient Absorption Spectroscopy Using Pulsed Electron Beams

Masanori Koshimizu, Yusa Muroya, Mitsuhiro Nogami, Keitaro Hitomi

Sensors and Materials　Vol. 36　No. 1　p. 261-261　2024/01/26　Research paper (scientific journal)

Recovery of platinum group metal resources from high-level radioactive liquid wastes by non-contact photoreduction

Hanqin Weng, Yi Wang, Fuhai Li, Yusa Muroya, Shinichi Yamashita, Sheng Cheng

Journal of Hazardous Materials　Vol. 458　p. 131852-131852　2023/09　Research paper (scientific journal)

Reaction mechanisms of Sn-complex-side-chain polymer used for extreme ultraviolet lithography, studied by electron pulse radiolysis and γ-radiolysis

Yui Takata, Yusa Muroya, Takahiro Kozawa, Kohei Machida, Satoshi Enomoto, Bilal Naqvi, Danilo De Simone

Japanese Journal of Applied Physics　Vol. 62　No. 7　p. 076502-076502　2023/07/01　Research paper (scientific journal)

Sensitization mechanism of metal oxide nanocluster resists with carboxylic acid ligands

Tomoe Otsuka, Yusa Muroya, Takuya Ikeda, Yoshitaka Komuro, Daisuke Kawana, Takahiro Kozawa

Japanese Journal of Applied Physics　Vol. 61　No. 8　p. 086508-086508　2022/08/01　Research paper (scientific journal)

Decarboxylation efficiency of carboxylic acids as ligands of metal oxide nanocluster resists upon γ-ray irradiation

Tomoe Otsuka, Yusa Muroya, Takuya Ikeda, Yoshitaka Komuro, Daisuke Kawana, Takahiro KOZAWA

Japanese Journal of Applied Physics　2022/01/13　Research paper (scientific journal)

Study on radical dianions of carboxylates used as ligands of metal oxide nanocluster resists

Kengo Ikeuchi, Yusa Muroya, Takuya Ikeda, Yoshitaka Komuro, Daisuke Kawana, Takahiro Kozawa

Japanese Journal of Applied Physics　Vol. 60　No. 7　2021/07/01　Research paper (scientific journal)

γ-Radiation synthesis of ultrasmall noble metal (Pd, Au, Pt) nanoparticles embedded on boron nitride nanosheets for high-performance catalysis

Yi Wang, Jialiang Chen, Lan Wang, Hanqin Weng, Zhihao Wu, Limin Jiao, Yusa Muroya, Shinichi Yamashita, Sheng Cheng, Fuhai Li, Hongbing Chen, Wei Huang, Mingzhang Lin

Ceramics International　2021/06　Research paper (scientific journal)

Scavenging of “dry” electrons prior to hydration by azide ions: Effect on the formation of h2 in the radiolysis of water by60 co c-rays and tritium b-electrons

Sunuchakan Sanguanmith, Jintana Meesungnoen, Yusa Muroya, Jean-Paul Jay-Gerin

Canadian Journal of Chemistry　Vol. 99　No. 11　p. 881-889　2021　Research paper (scientific journal)

Transient absorption spectroscopy of TlBr crystals using pulsed electron beams

Masanori KOSIHMIZU, Yusa MUROYA, Shinichi YAMASHITA, Mitsuhiro NOGAMI, Keitaro HITOMI, Yutaka FUJIMOTO, Keisuke ASAI

Sensors and Materials　Vol. accepted　No. 4　p. 1445-1445　2020/04/20　Research paper (scientific journal)

Observation of dissociative quasi-free electron attachment to nucleoside via excited anion radical in solution

Jun Ma, Anil Kumar, Yusa Muroya, Shinichi Yamashita, Tsuneaki Sakurai, Sergey A. Denisov, Michael D. Sevilla, Amitava Adhikary, Shu Seki, Mehran Mostafavi

Nature Communications　Vol. 10　No. 1　2019/12/01　Research paper (scientific journal)

Pulse radiolysis of carboxylic acids used as ligands of metal oxide nanocluster resists

Teppei Yamada, Yusa Muroya, Shinichi Yamashita, Yoshitaka Komuro, Daisuke Kawana, Akiyoshi Yamazaki, Takahiro Kozawa

Japanese Journal of Applied Physics　Vol. 58　No. 9　p. 096504-096504　2019/09/01　Research paper (scientific journal)

Pulse Radiolysis of Methacrylic Acid Ligand for Zirconia Nanoparticle Resist

Teppei YAMADA, Satoshi ISHIHARA, Yusa MUROYA, Julius Joseph, SANTILLAN, Shinichi YAMASHITA, Toshiro ITANI, Takahiro KOZAWA

Japanese Journal of Applied Physics　Vol. 58　No. 3　2019/02　Research paper (scientific journal)

Analysis of line-and-space patterns of ZrO2 nanoparticle resist on the basis of EUV sensitization mechanism

T. Kozawa, T. Yamada, Y. Muroya, J. J. Santillan, T. Itani

2019/02

Dependence of relationship between chemical gradient and line width roughness of zirconia nanoparticle resist on pattern duty, acid generator, and developer

T. Kozawa, A. Nakajima, T. Yamada, Y. Muroya, J. J. Santillan, T. Itani

Jpn. J. Appl. Phys.　2019/02　Research paper (scientific journal)

Observation of dissociative quasifree electron attachment to nucleoside via excited anion radical in solution

Jun Ma, Anil Kumar, Yusa Muroya, Shinichi Yamashita, Tsuneaki Sakurai, Sergey A. Denisov, Michael D. Sevilla, Amitava Adhikary, Shu Seki, Mehran Mostafavi

Nat. Commun.　2019/01　Research paper (scientific journal)

PWR secondary water chemistry guidelines in Japan - Purpose and technical background.

Hirotaka Kawamura, Yasuhiko Shoda, Takumi Terachi, Yosuke Katsumura, Shunsuke Uchida, Takayuki Mizuno, Yusa Muroya, Yasuo Tsuzuki, Ryuji Umehara, Hideo Hirano, Takao Nishimura

Prog. Nucl. Energ.　2019/01　Research paper (scientific journal)

Ps and ns pulse radiolysis studies on radiation-induced primary process of ligands of metal resists

T. Yamada, S. Ishihara, H. Yamamoto, Y. Muroya, Y. Komuro, D. Kawana, A. Yamazaki, S. Yamashita, T. Kozawa

2018/11

Gamma radiolysis study on solid nitrate calcines of reprocessing liquid waste

Y. Muroya, A. Suzuki

2018/11

Pulse radiolysis and gamma radiolysis studies on formation process of nanoparticles in organics-free platinum colloidal solution

M. Kariya, Y Muroya, K. Ishida, Y. Wada, T. Ito, N. Ota, S. Yamashita, T. Kozawa

2018/11

Sequential Radiation Chemical Reactions in Aqueous Solutions of Halide Anions

S. Yamashita, K. Hata, Y. Muroya, Y. Katsumura

2018/11

Pattern formation mechanism of zirconia nanoparticle resist used for extreme-ultraviolet lithography,

T. Kozawa, T. Yamada, S. Ishihara, H. Yamamoto, Y. Muroya, J. J, S. Santillan, Toshiro Itani

2018/09

Efficient separation of Re(VII) by radiation-induced reduction from aqueous solution

Yun Shang, Jiaxin Xiao, Hanqin Weng, Fuhai Li, Sheng Cheng, Shinichi Yamashita, Yusa Muroya, Mingzhang Lin

Chemical Engineering Journal　Vol. 341　p. 317-326　2018/06/01　Research paper (scientific journal)

An improved method for modelling coolant radiolysis in ITER

Zhong Fang, Xuewu Cao, Lili Tong, Yusa Muroya, Giles Whitaker, Mojtaba Momeni, Mingzhang Lin

Fusion Engineering and Design　Vol. 127　p. 91-98　2018/02/01　Research paper (scientific journal)

Yusa Muroya, Wataru Kanamori, Shinichi Yamashita, Yosuke Katsumura, Takahiro Kozawa

2017/10

Analysis of the relaxation process of electron-hole pairs in alpha-Al2O3 using transient absorption spectroscopy

Masanori Koshimizu, Yusa Muroya, Shinichi Yamashita, Hiroki Yamamoto, Yutaka Fujimoto, Keisuke Asai

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS　Vol. 28　No. 10　p. 7091-7094　2017/05　Research paper (scientific journal)

Analysis of the relaxation process of electron.hole pairs in α-Al2O3 using transient absorption spectroscopy

Masanori Koshimizu, Yusa Muroya, Shinichi Yamashita, Hiroki Yamamoto, Yutaka Fujimoto, Keisuke Asai

J. Mater. Sci.: Mater. Electron.　2017/02　Research paper (scientific journal)

5 Radiation Chemistry of Water and Aqueous Solutions

Yusa Muroya

RADIOISOTOPES　Vol. 66　No. 10　p. 425-435　2017　Research paper (scientific journal)

Effect of the solvation state of electron in dissociative electron attachment reaction in aqueous solutions

Furong Wang, Pierre Archirel, Yusa Muroya, Shinichi Yamashita, Pascal Pernot, Chengying Yin, Abdel Karim El Omar, Uli Schmidhammer, Jean-Marie Teuler, Mehran Mostafavi

Physical Chemistry Chemical Physics　Vol. 19　No. 34　p. 23068-23077　2017　Research paper (scientific journal)

Rate constant for the H• + H2O → •oH + H2 reaction at elevated temperatures measured by pulse radiolysis

Y. Muroya, S. Yamashita, P. Lertnaisat, S. Sanguanmith, J. Meesungnoen, J. P. Jay-Gerin, Y. Katsumura

Physical Chemistry Chemical Physics　Vol. 19　No. 45　p. 30834-30841　2017　Research paper (scientific journal)

Pulse radiolysis study on bimolecular recombination reaction of two hydrated electrons at high temperature and pressure

Wataru Kanamori, Yusa Muroya, Hiroki Yamamoto, Shinichi Yamashita, Yousuke Katsumura, Takahiro Kozawa

2016/10

Electron solvation and spur reaction processes in polar liquids at high temperature condition

Yusa Muroya, Tetsuro Yoshida, Shinichi, Yamashita, Yosuke Katsumura, Takahiro Kozawa

2016/10

Radiolysis of Water at High Temperature and High Pressure Conditions Studied by a Picosecond Time-resolved Electron Pulse Radiolysis

Yusa Muroya, Wataru Kanamori, Yosuke Katsumura, Shinichi Yamashita, Takahiro Kozawa

2016/10　Research paper (international conference proceedings)

Local density augmentation of supercritical water probed by 4,4′-bpyH radical: A pulse radiolysis study

Zhe Liu, Zhong Fang, Yusa Muroya, Haiying Fu, Yu Yan, Yosuke Katsumura, Mingzhang Lin

Chemical Physics Letters　Vol. 657　p. 78-82　2016/07/16　Research paper (scientific journal)

Electron solvation process, spur reaction process at high temperature

Yusa Muroya, Tetsuro Yoshida, Wataru Kanamori, Yosuke Katsumura, Shinichi Yamashita, Takahiro Kozawa

2016/06

Local density augmentation of supercritical water probed by 4,40-bpyH radical: A pulse radiolysis study

Zhe Liu, Zhong Fang, Yusa Muroya, Haiying Fu, Yu Yan, Yosuke Katsumura, Mingzhang Lin

Chemical Physics Letters　2016/05　Research paper (scientific journal)

Ab initio spur size calculation in liquid water at room temperature

Yusa Muroya, Asokendu Mozumder

Chemical Physics Letters　2016/05　Research paper (scientific journal)

Quick measurement of continuous absorption spectrum in ion beam pulse radiolysis: Application of optical multi-channel detector into transient species observation

Kazuhiro Iwamatsu, Yusa Muroya, Shinichi Yamashita, Atsushi Kimura, Mitsumasa Taguchi, Yosuke Katsumura

Radiation Physics and Chemistry　Vol. 119　p. 213-217　2016/02/01　Research paper (scientific journal)

Deciphering the reaction between a hydrated electron and a hydronium ion at elevated temperatures

Jun Ma, Shinichi Yamashita, Yusa Muroya, Yosuke Katsumura, Mehran Mostafavi

Physical Chemistry Chemical Physics　Vol. 17　No. 35　p. 22934-22939　2015/08/04　Research paper (scientific journal)

Sequential radiation chemical reactions in aqueous bromide solutions: pulse radiolysis experiment and spur model simulation

S. Yamashita, K. Iwamatsu, Y. Maehashi, M. Taguchi, K. Hata, Y. Muroya, Y. Katsumura

RSC ADVANCES　Vol. 5　No. 33　p. 25877-25886　2015　Research paper (scientific journal)

Chemical repair activity of free radical scavenger edaravone: reduction reactions with dGMP hydroxyl radical adducts and suppression of base lesions and AP sites on irradiated plasmid DNA.

Kuniki Hata, Ayumi Urushibara, Shinichi Yamashita, Mingzhang Lin, Yusa Muroya, Naoya Shikazono, Akinari Yokoya, Haiying Fu, Yosuke Katsumura

Journal of radiation research　Vol. 56　No. 1　p. 59-66　2015/01　Research paper (scientific journal)

Chemical repair activity of free radical scavenger edaravone: reduction reactions with dGMP hydroxyl radical adducts and suppression of base lesions and AP sites on irradiated plasmid DNA

Kuniki Hata, Ayumi Urushibara, Shinichi Yamashita, Mingzhang Lin, Yusa Muroya, Naoya Shikazono, Akinari Yokoya, Haiying Fu, Yosuke Katsumura

JOURNAL OF RADIATION RESEARCH　Vol. 56　No. 1　p. 59-66　2015/01　Research paper (scientific journal)

On the temperature dependence of the rate constant of the bimolecular reaction of two hydrated electrons

2013/08　Research paper (scientific journal)

Isotopic Ratio and Vertical Distribution of Radionuclides in Soil Affected by the Accident of Fukushima Dai-ichi Nuclear Power Plants

Takeshi Fujiwara, Takumi Saito, Yusa Muroya, Hiroyuki Sawahata, Yuji Yamashita, Shinya Nagasaki, Koji Okamoto, Hiroyuki Takahashi, Mitsuru Uesaka, Yosuke Katsumura, Satoru Tanaka

2012/11　Research paper (scientific journal)

On the Spur Lifetime and Its Temperature Dependence in the Low Linear Energy Transfer Radiolysis of Water

S. Sanguanmith, J. Meesungnoen, Y. Muroya, M. Lin, Y. Katsumura, J. -P. Jay-Gerin

Phys. Chem. Chem. Phys.　2012/10　Research paper (scientific journal)

On the Spur Lifetime and Its Temperature Dependence in the Low Linear Energy Transfer Radiolysis of Water

S. Sanguanmith, J. Meesungnoen, Y. Muroya, M. Lin, Y. Katsumura, J. -P. Jay-Gerin

2012/10　Research paper (scientific journal)

Time-dependent yield of the hydrated electron in subcritical and supercritical water studied by ultrafast pulse radiolysis and Monte-Carlo Simulation

Y. Muroya, S. Sanguanmith, J. Meesungnoen, M. Lin, Y. Yan, Y. Katsumura, J.-P. Jay-Gerin

Phys. Chem. Chem. Phys.　2012/08　Research paper (scientific journal)

Time-dependent yield of the hydrated electron in subcritical and supercritical water studied by ultrafast pulse radiolysis and Monte-Carlo Simulation

Yusa Muroya, Sunuchakan Sanguanmith, Jintana Meesungnoen, Mingzhang Lin, Yu Yan, Yosuke Katsumura, Jean-Paul Jay-Gerin

2012/08　Research paper (scientific journal)

Mechanism of radiation-induced reactions in aqueous solution of coumarin-3-carboxylic acid: Effects of concentration, gas and additive on fluorescent product yield

S. Yamashita, G. Baldacchino, T. Maeyama, M. Taguchi, Y. Muroya, M. Lin, A. Kimura, T. Murakami, Yosuke Katsumura

Free Radic. Res.　2012/07　Research paper (scientific journal)

Mechanism of radiation-induced reactions in aqueous solution of coumarin-3-carboxylic acid: Effects of concentration, gas and additive on fluorescent product yield

Shinichi Yamashita, Gerard Baldacchino, Takuya Maeyama, Mitsumasa Taguchi, Yusa Muroya, Mingzhang Lin, Atsushi Kimura, Takeshi Murakami, Yosuke Katsumura

2012/07　Research paper (scientific journal)

Hydroxyl radical, sulfate radical and nitrate radical reactivity toward crown ethers in aqueous solutions

L. Wan, J. Peng, M. Lin, Y. Muroya, Y. Katsumura, H. Fu

Radiat. Phys. Chem.　2012/05　Research paper (scientific journal)

Isotopic Ratio and Vertical Distribution of Radionuclides in Soil Affected by the Accident of Fukushima Dai-ichi Nuclear Power Plants

T. Fujiwara, T. Saito, Y. Muroya, H. Sawahata, Y. Yamashita, S. Nagasaki, K. Okamoto, H. Takahashi, M. Uesaka, Y. Katsumura, S. Tanaka

J. Environ. Radioact.　2012/05　Research paper (scientific journal)

Hydroxyl radical, sulfate radical and nitrate radical reactivity toward crown ethers in aqueous solutions

L. Wan, J. Peng, M. Lin, Y. Muroya, Y. Katsumura, H. Fu

2012/05　Research paper (scientific journal)

Pulse radiolysis studies of intermolecular charge transfer involving tryptophan and three-electron-bonded intermediates derived from methionine

H. Fu, M. Lin, Y. Muroya, Y. Katsumura

Res. Chem. Intermed.　2012/01　Research paper (scientific journal)

Pulse radiolysis studies of intermolecular charge transfer involving tryptophan and three-electron-bonded intermediates derived from methionine

H. Fu, M. Lin, Y. Muroya, Y. Katsumura

2012/01　Research paper (scientific journal)

Spin-Trapping Reactions of a Novel Gauchetype Radical Trapper G-CYPMPO

Toshitaka Oka, Shinichi Yamashita, Masamichi Midorikawa, Seiichi Saiki, Yusa Muroya, Masato Kamibayashi, Masayuki Yamashita, Kazunori Anzai, Yosuke Katsumura

ANALYTICAL CHEMISTRY　Vol. 83　No. 24　p. 9600-9604　2011/12　Research paper (scientific journal)

Spin-trapping reactions of a novel gauchetype radical trapper G-CYPMPO

T. Oka, S. Yamashita, M. Midorikawa, S. Saiki, Y. Muroya, M. Kamibayashi, M. Yamashita, K. Anzai, Y. Katsumura

2011/12　Research paper (scientific journal)

Time-dependent radiolytic yield of OH radical studied by picosecond pulse radiolysis

Abdel Karim El Omar, Uli Schmidhammer, Pierre Jeunesse, Jean-Philippe Larbre, Mingzhang Lin, Yusa Muroya, Yosuke Katsumura, Pascal Pernot, Mehran Mostafavi

2011/11　Research paper (scientific journal)

Free-Radical Scavenging Activities of Silybin and Its Analogues: A Pulse Radiolysis Study

H. Fu, M. Lin, Y. Katsumura, Y. Muroya

2011/10　Research paper (scientific journal)

Extraordinary Large Refractive Index Change of Poly(phenylene vinylene) Derivatives induced by Photo- or Quantum Beam Irradiation

T. Yamashita, K. Shinohara, Y. Nakatoh, Y. Muroya, K. Okano

2011/08　Research paper (scientific journal)

Nitration Activates Tyrosine toward Reaction with the Hydrated Electron

W.Q. Shi, H. Fu, P.L. Bounds, Y. Muroya, M. Lin, Y. Katsumura, Y.L. Zhao, Z.F. Chai

2011/07　Research paper (scientific journal)

Temperature dependent absorption spectra of Br-, Br 2•, and Br3- in aqueous solutions

Mingzhang Lin, Pierre Archirel, Nguyen Thi Van-Oanh, Yusa Muroya, Haiying Fu, Yu Yan, Ryuji Nagaishi, Yuta Kumagai, Yosuke Katsumura, Mehran Mostafavi

Journal of Physical Chemistry A　Vol. 115　No. 17　p. 4241-4247　2011/05/05　Research paper (scientific journal)

Low-linear energy transfer radiolysis of liquid water at elevated temperatures up to 350 degrees C: Monte-Carlo simulations

S. Sanguanmith, Y. Muroya, J. Meesungnoen, M. Lin, Y. Katsumura, L.M. Kohan, D.A. Guzonas, C.R. Stuart, J.-P. Jay-Gerin

2011/05　Research paper (scientific journal)

Temperature Dependent Absorption Spectra of Br(-), Br(2)(center dot-), and Br(3)(-) in Aqueous Solutions

M. Lin, P. Archirel, N.T. Van-Oanh, Y. Muroya, H. Fu, Y. Yan, R. Nagaishi, Y. Kumagai, Y. Katsumura, M. Mostafavi

2011/05　Research paper (scientific journal)

Temperature dependence of the Fricke dosimeter and spur expansion time in the low-LET high-temperature radiolysis of water up to 350 degrees C: a Monte-Carlo simulation study

S. Sanguanmith, Y. Muroya, T. Tippayamontri, J. Meesungnoen, M. Lin, Y. Katsumura, J.-P. Jay-Gerin

2011/05　Research paper (scientific journal)

Pulse Radiolysis Study on Free Radical Scavenger Edaravone (3-methyl-1-phenyl-2-pyrazolin-5-one). 2 : A Comparative Study on Edaravone Derivatives

HATA Kuniki, LIN Mingzhang, KATSUMURA Yosuke, MUROYA Yusa, FU Haiying, YAMASHITA Shinichi, NAKAGAWA Hidehiko

Journal of Radiation Research　Vol. 52　No. 1　p. 15-23　2011/01　Research paper (scientific journal)

Solvated electrons at elevated temperatures in different alcohols: Temperature and molecular structure effects

Y. Yan, M. Lin, Y. Katsumura, H. Fu, Y. Muroya

2010/12　Research paper (scientific journal)

Temperature and density effects on the absorption maximum of solvated electrons in sub- and super-critical methanol

Y. Yan, M. Lin, Y. Katsumura, Y. Muroya, S. Yamashita, K. Hata, J. Meesungnoen, J.-P. Jay-Gerin

2010/10　Research paper (scientific journal)

Protective effects of silybin and analogues against X-ray radiation-induced damage.

Haiying Fu, Mingzhang Lin, Yosuke Katsumura, Akinari Yokoya, Kuniki Hata, Yusa Muroya, Kentaro Fujii, Naoya Shikazono

Acta biochimica et biophysica Sinica　Vol. 42　No. 7　p. 489-95　2010/07　Research paper (scientific journal)

Radiolysis studies of aqueous kappa-carrageenan

L.V. Abad, H. Kudo, S. Saiki, N. Nagasawa, M. Tamada, H. Fu, Y. Muroya, M. Lin, Y. Katsumura, L.S. Relleve, C.T. Aranilla, A.M. de la Rosa

2010/05　Research paper (scientific journal)

ESR study on carboxymethyl chitosan radicals in an aqueous solution

S. Saiki, N. Nagasawa, A. Hiroki, M. Morishita, M. Tamada, Y. Muroya, H. Kudo, Y. Katsumura

2010/03　Research paper (scientific journal)

Ultrafast pulse radiolysis methods

Jacqueline Belloni, Robert A. Crowell, Yosuke Katsumura, Mingzhang Lin, Jean-Louis Marignier, Mehran Mostafavi, Yusa Muroya, Akinori Saeki, Seiichi Tagawa, Yoichi Yoshida, Vincent De Waele, James F. Wishart

Recent Trends in Radiation Chemistry　p. 121-160　2010/01/01　Part of collection (book)

First observation of picosecond kinetics of hydrated electrons in supercritical water

Y. Muroya, M. Lin, V. de Waele, Y. Hatano, Y. Katsumura, M. Mostafavi

2010/01　Research paper (scientific journal)

Fast scintillation processes in CsCl crystals comprising semiconductor nanocrystals

M. Koshimizu, S. Watanabe, K. Shibuya, Y. Muroya, K. Asai

2009/12　Research paper (scientific journal)

Free radical scavenging and radioprotective effects of carnosine and anserine

H. Fu, Y. Katsumura, M. Lin, Y. Muroya, K. Hata, K. Fujii, A. Yokoya, Y. Hatano

2009/12　Research paper (scientific journal)

Pulse Radiolysis Studies on the Temperature-Dependent Spectrum and the Time-Dependent Yield of Solvated Electron in Propane-1,2,3-triol

M. Lin, H. Fu, I. Lampre, V. de Waele, Y. Muroya, Y. Yan, S. Yamashita, Y. Katsumura, M. Mostafavi

2009/11　Research paper (scientific journal)

Free radical scavenging reactions and antioxidant activities of silybin: Mechanistic aspects and pulse radiolytic studies

Haiying Fu, Mingzhang Lin, Yusa Muroya, Kuniki Hata, Yosuke Katsumura, Akinari Yokoya, Naoya Shikazono, Yoshihiko Hatano

FREE RADICAL RESEARCH　Vol. 43　No. 9　p. 887-897　2009/06　Research paper (scientific journal)

Development of a new method to study elution properties of stainless materials in subcritical and supercritical water

Zhenhui Han, Yusa Muroya

2009/03　Research paper (international conference proceedings)

Fast Repair Activities Towards dGMP Hydroxyl Radical Adducts by Silybin and its Analogues :

FU Haiying, KATSUMURA Yosuke, LIN Mingzhang, HATA Kuniki, MUROYA Yusa, HATANO Yoshihiko

Journal of radiation research　Vol. 49　No. 6　p. 609-614　2008/11　Research paper (scientific journal)

Pulse radiolysis of sodium formate aqueous solution up to 400 °C: Absorption spectra, kinetics and yield of carboxyl radical CO2{radical dot}-

Mingzhang Lin, Yosuke Katsumura, Yusa Muroya, Hui He, Toyoaki Miyazaki, Daisuke Hiroishi

Radiation Physics and Chemistry　Vol. 77　No. 10-12　p. 1208-1212　2008/10　Research paper (scientific journal)

Research and development of a super fast reactor (11) An approach to evaluate the elution characteristic of stainless materials in sub-critical and supercritical water

Zhenhui Han, Yusa Muroya

2008/10　Research paper (international conference proceedings)

Ultra-fast pulse radiolysis: A review of the recent system progress and its application to study on initial yields and solvation processes of solvated electrons in various kinds of alcohols

Yusa Muroya, Mingzhang Lin, Zhenhui Han, Yuta Kumagai, Akira Sakumi, Toru Ueda, Yosuke Katsumura

Radiation Physics and Chemistry　Vol. 77　No. 10-12　p. 1176-1182　2008/10　Research paper (scientific journal)

Temperature effect on the absorption spectrum of the hydrated electron paired with a metallic cation in deuterated water

Yuta Kumagai, Mingzhang Lin, Isabelle Lampre, Mehran Mostafavi, Yusa Muroya, Yosuke Katsumura

Radiation Physics and Chemistry　Vol. 77　No. 10-12　p. 1198-1202　2008/10　Research paper (scientific journal)

Pulse radiolysis of sodium formate aqueous solution up to 400 degrees C: Absorption spectra, kinetics and yield of carboxyl radical CO(2)(.-)

M. Lin, Y. Katsumura, Y. Muroya, H. He, T. Miyazaki, D. Hiroishi

2008/10　Research paper (scientific journal)

Water radiolysis with heavy ions of energies up to 28 GeV-2: Extension of primary yield measurements to very high LET values

S. Yamashita, Y. Katsumura, M. Lin, Y. Muroya, T. Maeyama, T. Murakami

2008/10　Research paper (scientific journal)

Water radiolysis with heavy ions of energies up to 28 GeV. 3. Measurement of G(MV(center dot+)) in deaerated methyl viologen solutions containing various concentrations of sodium formate and Monte Carlo simulation

S. Yamashita, Y. Katsumura, M. Lin, Y. Muroya, T. Miyazaki, T. Murakami, J. Meesungnoen, J.-P. Jay-Gerin

2008/10　Research paper (scientific journal)

Laser photolysis and pulse radiolysis studies on silybin in ethanol solutions

FU H.

Radiat. Phys. Chem.　2008/10　Research paper (scientific journal)

Effect of water density on the absorption maximum of hydrated electrons in sub- and supercritical water up to 400 degrees C

J.-P. Jay-Gerin, M. Lin, Y. Katsumura, H. He, Y. Muroya, J. Meesungnoen

2008/09　Research paper (scientific journal)

Effect of temperature on the absorption spectra of the solvated electron in 1-propanol and 2-propanol: Pulse radiolysis and laser photolysis studies at temperatures up to supercritical condition

Z. Han, Y. Katsumura, M. Lin, H. He, Y. Muroya, H. Kudo

2008/04　Research paper (scientific journal)

Water radiolysis with heavy ions of energies up to 28 GeV. 1. Measurements of primary g values as track segment yields

S. Yamashita, Y. Katsumura, M. Lin, Y. Muroya, T. Miyazaki, T. Murakami

2008/04　Research paper (scientific journal)

Effect of water density on the absorption maximum of hydrated electrons in sub- and supercritical water up to 400 °c

Jean-Paul Jay-Gerin, Mingzhang Lin, Yosuke Katsumura, Hui He, Yusa Muroya, Jintana Meesungnoen

Journal of Chemical Physics　Vol. 129　No. 11　2008　Research paper (scientific journal)

Rate constants of reactions of kappa-carrageenan with hydrated electron and hydroxyl radical

L.V. Abad, S. Saiki, H. Kudo, Y. Muroya, Y. Katsumura, A.M. de la Rosa

2007/12　Research paper (scientific journal)

Pulse radiolysis study on free radical scavenger edaravone (3-methyl-1-phenyl-2-pyrazolin-5-one)

M. Lin, Y. Katsumura, K. Hata, Y. Muroya, K. Nakagawa

2007/11　Research paper (scientific journal)

Synchronization between the laser and electron beam in a photocathode RF gun

A. Sakumi, H. Iijima, M. Uesaka, K. Yoshii, T. Ueda, Y. Muroya, A. Fukasawa, N. Kumagai, H. Tomizawa, J. Urakawa

2007/09　Research paper (scientific journal)

Preparation and photoreactivity of a novel lophine dimer containing a hydrophilic group

Journal of photopolymer science and technology　Vol. 20　No. 5　p. 757-762　2007/09　Research paper (scientific journal)

Application of accelerators for the research and development of scintillators

K. Shibuya, M. Koshimizu, K. Asai, Y. Muroya, Y. Katsumura, N. Inadama, E. Yoshida, F. Nishikido, T. Yamaya, H. Murayama

2007/08　Research paper (scientific journal)

Temperature Effect on the Absorption Spectrum of the Hydrated Electron Paired with a Lithium Cation in Deuterated Water

Mingzhang Lin, Yuta Kumagai, Isabelle Lampre, François-Xavier Coudert, Yusa Muroya, Anne Boutin, Mehran Mostafavi, Yosuke Katsumura

The Journal of Physical Chemistry A　Vol. 111　No. 18　p. 3548-3553　2007/05　Research paper (scientific journal)

Time-dependent radiolytic yields at room temperature and temperature-dependent absorption spectra of the solvated electrons in polyols

M. Lin, M. Mostafavi, Y. Muroya, I. Lampre, Y. Katsumura

2007/02　Research paper (scientific journal)

Time dependent radiolytic yields of the solvated electrons in 1,2-ethanediol, 1,2-propanediol and 1,3-propanediol from picosecond to microsecond

M. Lin, M. Mostafavi, Y. Muroya, Z. Han, I. Lampre, Y. Katsumura

2006/10　Research paper (scientific journal)

Refractive Index Control and Electron Beam Pulse Radiolysis of Transparent Polyimides

Journal of photopolymer science and technology　Vol. 19　No. 1　p. 117-122　2006/08　Research paper (scientific journal)

Ultraslow thermoresponse in hydrogels synthesized with radiation technique

Akihiro Hiroki, Yasunari Maekawa, Ryoichi Katakai, Takashi Yamashita, Yusa Muroya, Yosuke Katsumura, Masaru Yoshida

MACROMOLECULES　Vol. 39　No. 12　p. 4132-4137　2006/06　Research paper (scientific journal)

Ultraslow thermoresponse in hydrogels synthesized with radiation technique

A. Hiroki, Y. Maekawa, R. Katakai, T. Yamashita, Y. Muroya, Y. Katsumura, M. Yoshida

2006/06　Research paper (scientific journal)

High-LET ion radiolysis of water : visualization of the formation and evolution of ion tracks and relevance to the radiation-induced bystander effect

MUROYA Y

Radiat Res　Vol. 165　p. 485-491　2006/04　Research paper (scientific journal)

High temperature/pressure optical cell for absorption studies of supercritical fluids and its first application to laser photolysis of phenol aqueous solution up to 400 ºC

M. Lin, Y. Katsumura, Y. Muroya, H. He

2006/04　Research paper (scientific journal)

Radiolysis of phenol in aqueous solution at elevated temperatures

T. Miyazaki, Y. Katsumura, M. Lin, Y. Muroya, H. Kudo, M. Taguchi, M. Asano, M. Yoshida

2006/03　Research paper (scientific journal)

γ-Radiolysis of benzophenone aqueous solution at elevated temperatures up to supercritical condition

Toyoaki Miyazaki, Yosuke Katsumura, Mingzhang Lin, Yusa Muroya, Hisaaki Kudo, Masaharu Asano, Masaru Yoshida

Radiation Physics and Chemistry　Vol. 75　No. 2　p. 218-228　2006/02　Research paper (scientific journal)

Gamma-radiolysis of benzophenone aqueous solution at elevated temperatures up to supercritical condition

T. Miyazaki, Y. Katsumura, M. Lin, Y. Muroya, H. Kudo, M. Asano, M. Yoshida

2006/02　Research paper (scientific journal)

RF design of a cartridge-type photocathode RF gun in S-band linac

H. Moritani, A. Sakumi, Y. Muroya, T. Ueda, M. Uesaka, J. Sasabe, N. Kumagai, H. Hanaki, S. Suzuki, H. Tomizawa, J. Urakawa

EPAC 2006 - Contributions to the Proceedings　p. 2499-2501　2006　Research paper (international conference proceedings)

Change in surface of polymer materials upon irradiation of accelerated micro-particles

H. Kudo, M. Tadokoro, S. Narita, L. Matsuoka, Y. Muroya, Y. Katsumura

2005/07　Research paper (scientific journal)

Synthesis of Allene Derivatives and their Photophysical Processes

Journal of photopolymer science and technology　Vol. 18　No. 1　p. 95-102　2005/07　Research paper (scientific journal)

Pulse radiolysis of 4,4′-bipyridyl aqueous solutions at elevated temperatures: Spectral changes and reaction kinetics up to 400°C

Mingzhang Lin, Yosuke Katsumura, Hui He, Yusa Muroya, Zhenhui Han, Toyoaki Miyazaki, Hisaaki Kudo

Journal of Physical Chemistry A　Vol. 109　No. 12　p. 2847-2854　2005/03/31　Research paper (scientific journal)

Temperature and pressure dependence of the absorption spectra and decay kinetics of solvated electrons in ethanol from 22 to 250°C studied by pulse radiolysis

Z. Han, Y. Katsumura, M. Lin, H. He, Y. Muroya, H. Kudo

Chemical Physics Letters　Vol. 404　No. 4-6　p. 267-271　2005/03/21　Research paper (scientific journal)

The formation and properties of the melatonin radical: a photolysis study of melatonin with 248 nm laser light

H. He, M. Lin, Z. Han, Y. Muroya, H. Kudo, Y. Katsumura

2005/03　Research paper (scientific journal)

Pulse Radiolysis of 4,4'-Bipyridyl Aqueous Solutions at Elevated Temperatures: Spectral Changes and Reaction Kinetics up to 400 degree C

Mingzhang Lin, Yosuke Katsumura, Hui He, Yusa Muroya, Zhenhui Han, Toyoaki Miyazaki, Hisaaki Kudo

2005/03　Research paper (scientific journal)

Temperature and pressure dependence of the absorption spectra and decay kinetics of solvated electrons in ethanol from 22 to 250 degree C studied by pulse radiolysis

Z. Han, Y. Katsumura, M. Lin, H. He, Y. Muroya, H. Kudo

2005/03　Research paper (scientific journal)

A re-evaluation of the initial yield of the hydrated electron in the picosecond time range

MUROYA Y.

Radiat. Phys. Chem.　Vol. 72　p. 169-172　2005/02　Research paper (scientific journal)

Laser flash photolysis of carboxymethylcellulose in an aqueous solution

R.A. Wach, H. Kudoh, M. Zhai, Y. Muroya, Y. Katsumura

2005/02　Research paper (scientific journal)

Structual effect of charge transfer of polyimides and their dynamics

Savaka Miake, Jun Kato, Yusa Muroya, Yosuke Katsumura, Takashi Yamashita

Polymer Preprints, Japan　Vol. 54　No. 1　2005　Research paper (international conference proceedings)

Refractive index lithography of transparent polyimides

Takashi Yamashita, Mutsuki Ogawa, Jun Kato, Yusa Muroya, Yosuke Katsumura

Polymer Preprints, Japan　Vol. 54　No. 2　p. 4350-4351　2005　Research paper (international conference proceedings)

Current status of the ultra-fast pulse radiolysis system at NERL, Univ. of Tokyo

Y. Muroya, M. Lin, H. Iijima, T. Ueda, Y. Katsumura

2005/01　Research paper (scientific journal)

Synthesis of polyimides with aliphatic moieties and their charge transfer structure and photophysical processes

S. Miake, J. Kato, Y. Muroya, Y. Katsumura, T. Yamashita

2004/12　Research paper (scientific journal)

Development of ultra-fast semiconducting scintillators using quantum confinement effect

K. Shibuya, M. Koshimizu, H. Murakami, Y. Muroya, Y. Katsumura, K. Asai

2004/10　Research paper (scientific journal)

Pulse radiolysis study on the estimation of radiolytic yields of water decomposition products in high-temperature and supercritical water: Use of methyl viologen as a scavenger

M. Lin, Y. Katsumura, Y. Muroya, H. He, G. Wu, Z. Han, T. Miyazaki, H. Kudo

2004/10　Research paper (scientific journal)

Rate constants of reactions of carboxymethylcellulose with hydrated electron, hydroxyl radical and the decay of CMC macroradicals. A pulse radiolysis study

R.A. Wach, H. Kudoh, M. Zhai, N. Nagasawa, Y. Muroya, F. Yoshii, Y. Katsumura

2004/09　Research paper (scientific journal)

Laser photolysis study on the reaction of nitrate radical with tributylphosphate and its analogues-comparison with sulfate radical

H. He H, M. Lin, Y. Muroya, H. Kudo, Y. Katsumura

2004/03　Research paper (scientific journal)

Laser photolysis of carboxymethylated chitin derivatives in aqueous solution. Part 2. Reaction of OH^- and SO_4^<2-> radicals with carboxymethylated chitin derivatives

ZHAI M

Biomacromolecules　Vol. 5　p. 458-462　2004/03　Research paper (scientific journal)

Laser photolysis of carboxymethylated chitin derivatives in aqueous solution. Part 1. Formation of hydrated electron and a long-lived radical

M. Zhai, H. Kudoh, G. Wu, R.A. Wach, Y. Muroya, Y. Katsumura, N. Nagasawa, L. Zhao, F. Yoshii

2004/03　Research paper (scientific journal)

Temperature-dependent absorption spectra of the solvated electron in ethylene glycol at 100 atm studied by pulse radiolysis from 296 to 598 K

M. Mostafavi, M. Lin, H. He, Y. Muroya, Y. Katsumura

2004/01　Research paper (scientific journal)

Erratum: Radiolysis of liquid water: An attempt to reconcile Monte-Carlo calculations with new experimental hydrated electron yield data at early times (Canadian Journal of Chemistry (2002) 80(10) (1367-1374))

Yusa Muroya, Jintana Meesungnoen, Jean-Paul Jay-Gerin, Abdelali Filali-Mouhim, Thomas Goulet, Yosuke Katsumura, Samlee Mankhetkorn

Canadian Journal of Chemistry　Vol. 80　No. 12　2002/12　Research paper (scientific journal)

Radiolysis of liquid water an attempt to reconciles Montr-Carlo calculations with new experimental hydrated electron yield data at early times

MUROYA Y.

Can. J. Chem.　Vol. 80　p. 1367-1374　2002/10　Research paper (scientific journal)

Ultra-fast pulse radiolysis system combined with a laser photocathode RF gun and a femtosecond laser

MUROYA Y.

Nucl. Instrum. Methods A　Vol. 489　p. 554-554　2002/08　Research paper (scientific journal)

Temperature dependence of ketyl radical in aqueous benzophenone solutions up to 400 degrees C: A pulse radiolysis study

G. Wu, Y. Katsumura, M. Lin, T. Morioka, Y. Muroya

2002/07　Research paper (scientific journal)

Pulse Radiolysis study of absorption spectra of Ag0 and Ag2+ in water from room temperature up to 380 degrees C

M. Mostafavi, M. Lin, G. Wu, Y. Katsumura, Y. Muroya

2002/04　Research paper (scientific journal)

Temperature dependence of carbonate radical in NaHCO3 and Na2CO3 solutions: Is the radical a single anion?

G. Wu, Y. Katsumura, Y. Muroya, M. Lin, T. Morioka

2002/03　Research paper (scientific journal)

High-Charge S-Band Photocathode RF-Gun and Linac System for Radiation Research

KOBAYASHI Tetsuya, UESAKA Mitsuru, KATSUMURA Yousuke, MUROYA Yusa, WATANABE Takahiro, UEDA Toru, YOSHII Koji, NAKAJIMA Kazuhisa, ZHU Xiongwei, KANDO Masaki

Journal of Nuclear Science and Technology　Vol. 39　No. 1　p. 6-14　2002/01　Research paper (scientific journal)

Performance study of high current photo-cathode RF-gun with new laser system

T. Kobayashi, Y. Muroya, T. Watanabe, T. Ueda, K. Yoshii, M. Uesaka, Y. Katsumura, K. Nakajima, X. Zhu

2001/12　Research paper (scientific journal)

Observation of hydrated electron, (SCN)2.- and CO3.- radical in high temperature and supercritical water

Y. Katsumura Y, G. Wu, M. Lin, Y. Muroya, T. Morioka, Y. Terada, X. Li

2001/10　Research paper (scientific journal)

Radiolysis of aqueous solutions with pulsed ion beams. 4. Product yields for proton beams in solutions of thiocyanate and methyl viologen/formate

N. Chitose, Y. Katsumura, M. Domae, Z. Cai, Y. Muroya, T. Murakami, JA. LaVerne

2001/05　Research paper (scientific journal)

Temperature dependence of (SCN)2.- in water at 25-400 degrees C: Absorption spectrum, equilibrium constant, and decay

G. Wu, Y. Katsumura, Y. Muroya, M. Lin, T. Morioka

2001/05　Research paper (scientific journal)

Hundreds- and tens-femtosecond time-resolved pump-and-probe analysis system

M. Uesaka, T. Watanabe, T. Kobayashi, T. Ueda, K. Yoshii, G. Wu, X. Li, Y. Muroya, J. Sugahara, K. Kinosita, N. Hafs, H. Okuda, T. Nishihara, Y. Terada, K. Nakajima, Y. Katsumura

2001/03　Research paper (scientific journal)

Reactions of reducing and oxidizing radicals with caffeic acid: a pulse radiolysis and theoretical study

X. Li, Z. Cai, Y. Katsumura, G. Wu, Y. Muroya

2001/03　Research paper (scientific journal)

Design and development of a sub-picosecond pulse radiolysis system

Y. Muroya, T. Watanabe, G. Wu, X. Li, T. Kobayashi, J. Sugahara, T. Ueda, K. Yoshii, M. Uesaka, Y. Katsumura

2001/03　Research paper (scientific journal)

Pulse radiolysis of high temperature and supercritical water: experimental setup and eaq- observation

G. Wu, Y. Katsumura, Y. Muroya, X. Li, Y. Terada

2001/03　Research paper (scientific journal)

Performance study of high current photo-cathode RF-gun with new laser system

T Kobayashi, Y Muroya, T Watanabe, T Ueda, K Yoshii, M Uesaka, Y Katsumura, K Nakajima, Zhu, X

INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS　Vol. 14　No. 1-4　p. 143-150　2001　Research paper (scientific journal)

Hydrated electron in subcritical and supercritical water: a pulse radiolysis study

G. Wu, Y. Katsumura, Y. Muroya, X. Li, Y. Terada

2000/04　Research paper (scientific journal)

Reinvestigation of the acid-base equilibrium of the (bi)carbonate radical and pH dependence of its reactivity with inorganic reactants

Z. Zuo, Z. Cai, Y. Katsumura, N. Chitose, Y. Muroya

1999/06　Research paper (scientific journal)