Rapid Analysis for α-Tocopherol and Its Oxidative Products in the <i>Pisum sativum</i> L. Leaf Using Supercritical Fluid Chromatography-Medium Vacuum Chemical Ionization Tandem Mass Spectrometry

Toshinobu Hondo, Yumi Miyake, Michisato Toyoda

Mass Spectrometry　Vol. 13　No. 1　p. A0153-A0153　2024/10/12　Research paper (scientific journal)

Probe oscillation control in tapping-mode scanning probe electrospray ionization for stabilization of mass spectrometry imaging

Mengze Sun, Yoichi Otsuka, Maki Okada, Shuichi Shimma, Michisato Toyoda

The Analyst　Vol. 149　No. 15　p. 4011-4019　2024/06　Research paper (scientific journal)

Spatial extension of the transient gain drop in a microchannel plate for a single-pulse irradiation

Hiroshi Kobayashi, Toshinobu Hondo, Yasuo Kanematsu, Motohiro Suyama, Michisato Toyoda

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　Vol. 1063　p. 169301-169301　2024/06　Research paper (scientific journal)

A Method for High Throughput Free Fatty Acids Determination in a Small Section of Bovine Liver Tissue Using Supercritical Fluid Extraction Combined with Supercritical Fluid Chromatography-Medium Vacuum Chemical Ionization Mass Spectrometry

Toshinobu Hondo, Yumi Miyake, Michisato Toyoda

Mass Spectrometry　Vol. 13　No. 1　p. A0141-A0141　2024/01/13　Research paper (scientific journal)

Estimation of the Spatial Extent of the Transient Gain Drop in a Microchannel Plate

Hiroshi Kobayashi, Toshinobu Hondo, Yasuo Kanematsu, Motohiro Suyama, Michisato Toyoda

Mass Spectrometry　Vol. 12　No. 1　p. A0134-A0134　2023/11/07　Research paper (scientific journal)

Evaluation of transient gain-drop and following recovery property on microchannel plate: Comparison between two evaluation methods

Hiroshi Kobayashi, Toshinobu Hondo, Yasuo Kanematsu, Motohiro Suyama, Michisato Toyoda

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　Vol. 1053　p. 168355-168355　2023/08　Research paper (scientific journal)

Aeromicelle—A new form of liquid aerosol for delivering aqueous samples into a single-particle mass spectrometer

Hiroshi Furutani, Kana Kato, Teruo Hinoue, Takashi Kimoto, Michisato Toyoda

Talanta　Vol. 260　p. 124616-124616　2023/08　Research paper (scientific journal)

Real-Time Single-Particle Characteristics and Aging of Cooking Aerosols in Urban Beijing

Tao Ma, Hiroshi Furutani, Fengkui Duan, Yongliang Ma, Michisato Toyoda, Takashi Kimoto, Tao Huang, Kebin He

Environmental Science & Technology Letters　2023/03/16　Research paper (scientific journal)

Solvent effects of N,N-dimethylformamide and methanol on mass spectrometry imaging by tapping-mode scanning probe electrospray ionization

Yoichi Otsuka, Nijiho Ote, Mengze Sun, Shuichi Shimma, Osamu Urakawa, Shinichi Yamaguchi, Tomoya Kudo, Michisato Toyoda

The Analyst　Vol. 148　No. 6　p. 1275-1284　2023/03　Research paper (scientific journal)

Distinct diurnal chemical compositions and formation processes of individual organic-containing particles in Beijing winter

Tao Ma, Hiroshi Furutani, Fengkui Duan, Takashi Kimoto, Yongliang Ma, Lidan Zhu, Tao Huang, Michisato Toyoda, Kebin He

Environmental Pollution　Vol. 318　No. 1　p. 120846-120846　2023/02　Research paper (scientific journal)

Attempts to Detect Lipid Metabolites from a Single Cell Using Proton-Transfer-Reaction Mass Spectrometry Coupled with Micro-Scale Supercritical Fluid Extraction: A Preliminary Study

Toshinobu Hondo, Chihiro Ota, Kohta Nakatani, Yumi Miyake, Hiroshi Furutani, Takeshi Bamba, Michisato Toyoda

Mass Spectrometry　Vol. 11　No. 1　p. A0112-A0112　2022/12/29　Research paper (scientific journal)

Rapid Analysis of α-Tocopherol and Its Oxidation Products Using Supercritical Carbon Dioxide and Proton Transfer Reaction Ionization Mass Spectrometry

Chihiro Ota, Toshinobu Hondo, Yumi Miyake, Hiroshi Furutani, Michisato Toyoda

Mass Spectrometry　Vol. 11　No. 1　p. A0108-A0108　2022/12/20　Research paper (scientific journal)

Matrix-Assisted Laser Desorption/Ionization (MALDI) Mass Spectrometry Imaging of L-4-Phenylalanineboronic Acid (BPA) in a Brain Tumor Model Rat for Boron Neutron Capture Therapy (BNCT)

Yumi Miyake, Sachie Kusaka, Isao Murata, Michisato Toyoda

Mass Spectrometry　Vol. 11　No. 1　p. A0105-A0105　2022/12/20　Research paper (scientific journal)

Space and Time Coherent Mapping for Subcellular Resolution of Imaging Mass Spectrometry

Jun Aoki, Masako Isokawa, Michisato Toyoda

Cells　Vol. 11　No. 21　p. 3382-3382　2022/10/26　Research paper (scientific journal)

Microscale supercritical fluid extraction combined with supercritical fluid chromatography and proton-transfer-reaction ionization time-of-flight mass spectrometry for a magnitude lower limit of quantitation of lipophilic compounds

Toshinobu Hondo, Chihiro Ota, Yumi Miyake, Hiroshi Furutani, Michisato Toyoda

Journal of Chromatography A　Vol. 1682　p. 463495-463495　2022/10　Research paper (scientific journal)

A Method for Expanding Mass Range on a Multi-Turn Time-of-Flight Mass Spectrometer by a Lap Superimposed Spectrum

Toshinobu Hondo, Michisato Toyoda

Mass Spectrometry　Vol. 10　No. 1　p. A0098-A0098　2021/10/14　Research paper (scientific journal)

Development of a Multi-Turn Time-of-Flight Mass Spectrometer with a Proton Transfer Reaction Ion Source for the On-Site Real-Time Measurement of Volatile Organic Compounds

Yosuke Kawai, Shinya Kawai, Hiroshi Furutani, Morio Ishihara, Reiki Watanabe, Kunihiko Nakayama, Ikunori Kannoh, Norihisa Hatakeyama, Michisato Toyoda

Journal of the Mass Spectrometry Society of Japan　Vol. 69　No. 5　p. 68-74　2021/10/01　Research paper (scientific journal)

A Feasible Study of <i>In-Situ</i> Measurements of Light Isotopes and Organic Molecules with High Resolution Mass Spectrometer MULTUM on the OKEANOS Mission

Motoo ITO, Tatsuaki OKADA, Yoko KEBUKAWA, Jun AOKI, Yosuke KAWAI, Jun MATSUMOTO, Toshihiro CHUJO, Ryosuke NAKAMURA, Hajime YANO, Sho-ichiro YOKOTA, Michisato TOYODA, Hisayoshi YURIMOTO, Motoki WATANABE, Ryota IKEDA, Yuki KUBO, Noel GRAND, Herve COTTIN, Arnaud BUCH, Cyril SZOPA, Osamu MORI

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN　Vol. 19　No. 4　p. 477-484　2021/08　Research paper (scientific journal)

Analysis of Nonvolatile Molecules in Supercritical Carbon Dioxide Using Proton-Transfer-Reaction Ionization Time-of-Flight Mass Spectrometry.

Toshinobu Hondo, Chihiro Ota, Yumi Miyake, Hiroshi Furutani, Michisato Toyoda

Analytical Chemistry　Vol. 93　No. 17　p. 6589-6593　2021/05/04　Research paper (scientific journal)

Development of novel projection-type imaging mass spectrometer

J. Aoki, M. Toyoda

Review of Scientific Instruments　Vol. 92　No. 5　p. 053706-053706　2021/05/01　Research paper (scientific journal)

Gas chromatography/miniaturized time-of-flight mass spectrometry technique for high-throughput quantitative on-site field analysis

Toshinobu Hondo, Noriko Nakayama, Michisato Toyoda

International Journal of Mass Spectrometry　Vol. 463　p. 116555-116555　2021/05　Research paper (scientific journal)

Evaluation of microchannel plate gain drops caused by high ion fluxes in time‐of‐flight mass spectrometry: A novel evaluation method using a multi‐turn time‐of‐flight mass spectrometer

Hiroshi Kobayashi, Toshinobu Hondo, Michisato Toyoda

Journal of Mass Spectrometry　Vol. 56　No. 3　2021/03　Research paper (scientific journal)

Mass spectrometric multiple soil-gas flux measurement system with a portable high-resolution mass spectrometer (MULTUM) coupled to an automatic chamber for continuous field observations

Noriko Nakayama, Yo Toma, Yusuke Iwai, Hiroshi Furutani, Toshinobu Hondo, Ryusuke Hatano, Michisato Toyoda

Atmospheric Measurement Techniques　Vol. 13　No. 12　p. 6657-6673　2020/12/09　Research paper (scientific journal)

Selective Extraction of a Monoisotopic Ion While Keeping the Other Ions in Flight on a Multi-Turn Time-of-Flight Mass Spectrometer

Toshinobu Hondo, Hiroshi Kobayashi, Michisato Toyoda

Mass Spectrometry　Vol. 9　No. 1　p. A0088-A0088　2020/08/20　Research paper (scientific journal)

Development of novel ion detector that combines a microchannel plate with an avalanche diode

Hiroshi Kobayashi, Toshinobu Hondo, Naruaki Imaoka, Motohiro Suyama, Michisato Toyoda

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　Vol. 971　p. 164110-164110　2020/08　Research paper (scientific journal)

Contribution of hydroxymethanesulfonate (HMS) to severe winter haze in the North China Plain

Tao Ma, Hiroshi Furutani, Fengkui Duan, Takashi Kimoto, Jingkun Jiang, Qiang Zhang, Xiaobin Xu, Ying Wang, Jian Gao, Guannan Geng, Meng Li, Shaojie Song, Yongliang Ma, Fei Che, Jie Wang, Lidan Zhu, Tao Huang, Michisato Toyoda, Kebin He

Atmospheric Chemistry and Physics　Vol. 20　No. 10　p. 5887-5897　2020/05/18　Research paper (scientific journal)

New Method for Improving LC/Time-of-Flight Mass Spectrometry Detection Limits Using Simultaneous Ion Counting and Waveform Averaging

Yosuke Kawai, Yumi Miyake, Toshinobu Hondo, Jean-Luc Lehmann, Kentaro Terada, Michisato Toyoda

Analytical Chemistry　Vol. 92　No. 9　p. 6579-6586　2020/05/05　Research paper (scientific journal)

Development of a Secondary Neutral Mass Spectrometer for Submicron Imaging Mass Spectrometry

Yosuke Kawai, Kentaro Terada, Toshinobu Hondo, Jun Aoki, Morio Ishihara, Michisato Toyoda, Ryosuke Nakamura

Proceedings of the 15th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG15)　Vol. 31　2020/03/27　Research paper (international conference proceedings)

High throughput isotope abundance ratio determination based on simultaneous ion counting and waveform averaging

Yosuke Kawai, Toshinobu Hondo, Jean-Luc Lehmann, Kentaro Terada, Michisato Toyoda

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　Vol. 942　p. 162427-162427　2019/10　Research paper (scientific journal)

Development of an ion trap with a metastable atom bombardment ionization source to observe ion-molecule reactions

Kenichi Iwamoto, Hiroshi Matsubara, Michisato Toyoda

International Journal of Mass Spectrometry　Vol. 430　p. 80-86　2018/07/01　Research paper (scientific journal)

Improved Quantitative Dynamic Range of Time-of-Flight Mass Spectrometry by Simultaneously Waveform-Averaging and Ion-Counting Data Acquisition

Yosuke Kawai, Toshinobu Hondo, Kirk R. Jensen, Michisato Toyoda, Kentaro Terada

Journal of the American Society for Mass Spectrometry　Vol. 29　No. 7　p. 1403-1407　2018/04/26　Research paper (scientific journal)

Development of Muonic Atom Beam Extraction System and First Evaluation by Intense Negative Muon Beam of J-PARC MUSE

Go Yoshida, Kazuhiko Ninomiya, Makoto Inagaki, Michisato Toyoda, Jun Aoki, Naritoshi Kawamura, Yasuhiro Miyake, Atsushi Shinohara

Proceedings of the 14th International Conference on Muon Spin Rotation, Relaxation and Resonance (μSR2017)　2018/02/28　Research paper (international conference proceedings)

A new approach for accurate mass assignment on a multi-turn time-of-flight mass spectrometer

Toshinobu Hondo, Kirk R Jensen, Jun Aoki, Michisato Toyoda

European Journal of Mass Spectrometry　Vol. 23　No. 6　p. 385-392　2017/08/02　Research paper (scientific journal)

Instrumentation and Method Development for On-Site Analysis of Helium Isotopes

Kirk R. Jensen, Toshinobu Hondo, Hirochika Sumino, Michisato Toyoda

Analytical Chemistry　Vol. 89　No. 14　p. 7535-7540　2017/07/07　Research paper (scientific journal)

Development on Multi-Turn TOF-SIMS with a Femto-Second Laser for Post-Ionization: First Application of OPTIMA (Osaka PosT-Ionization MAss spectrometer) for Presolar SiCs

Kentaro Terada, Yosuke Kawai, Michisato Toyoda, Morio Ishihara, Jun Aoki, Hikaru Yabuta, Kohei Miya, Taichi Suwa, Takahiro Matsuda, Ryosuke Nakamura

Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016)　2017/02/27　Research paper (international conference proceedings)

High Spatial Resolution Laser Desorption/Ionization Mass Spectrometry Imaging of Organic Layers in an Organic Light-Emitting Diode

Vol. 5　No. 1　p. A0052-78　2017/01　Research paper (scientific journal)

N-Terminal Derivatization with Structures Having High Proton Affinity for Discrimination between Leu and Ile Residues in Peptides by High-Energy Collision-Induced Dissociation

Atsushi Kitanaka, Masahiro Miyashita, Ayumi Kubo, Takaya Satoh, Michisato Toyoda, Hisashi Miyagawa

Mass Spectrometry　Vol. 5　No. 1　p. A0051-A0051　2016/12　Research paper (scientific journal)

High molecular weight organic compounds (HMW-OCs) in severe winter haze: Direct observation and insights on the formation mechanism

F.K. Duan, K.B. He, Y.L. Ma, T. Ihozaki, H. Kawasaki, R. Arakawa, S. Kitayama, K. Tujimoto, T. Huang, T. Kimoto, H. Furutani, M. Toyoda

Environmental Pollution　Vol. 218　p. 289-296　2016/11　Research paper (scientific journal)

Metabolomic Analysis of Gingival Crevicular Fluid Using Gas Chromatography/Mass Spectrometry

Miho Ozeki, Takenori Nozaki, Jun Aoki, Takeshi Bamba, Kirk R. Jensen, Shinya Murakami, Michisato Toyoda

Mass Spectrometry　Vol. 5　No. 1　p. A0047-A0047　2016/06　Research paper (scientific journal)

Signal-to-Noise Performance Evaluation of a New 12-Bit Digitizer on a Time-of-Flight Mass Spectrometer

Toshinobu Hondo, Yousuke Kawai, Michisato Toyoda

European Journal of Mass Spectrometry　Vol. 21　No. 1　p. 13-17　2015/02/01　Research paper (scientific journal)

High-energy collision-activated and electron-transfer dissociation of gas-phase complexes of tryptophan with Na+, K+, and Ca2+

Akimasa Fujihara, Yuki Sha, Sou Matsuo, Michisato Toyoda, Shigeo Hayakawa

The European Physical Journal D　Vol. 68　No. 10　2014/10/01　Research paper (scientific journal)

Development of a Miniaturized Multi-Turn Time-of-Flight Mass Spectrometer with a Pulsed Fast Atom Bombardment Ion Source

Hirofumi Nagao, Shinichi Miki, Michisato Toyoda

European Journal of Mass Spectrometry　Vol. 20　No. 3　p. 215-220　2014/06/01　Research paper (scientific journal)

Separation of Isobaric Compounds Using a Spiral Orbit Type Time-of-Flight Mass Spectrometer, MALDI-SpiralTOF

Takaya Satoh, Ayumi Kubo, Hisanao Hazama, Kunio Awazu, Michisato Toyoda

Mass Spectrometry　Vol. 3　No. Special_Issue　p. S0027-S0027　2014/05　Research paper (scientific journal)

Report on "New frontier of Earth and Space Science developed by mass spectrometry" workshop

Terada K., Toyoda M.

Planetary People　Vol. 23　No. 1　p. 53-56　2014/03

Observation of Accumulated Metal Cation Distribution in Fish by Novel Stigmatic Imaging Time-of-Flight Mass Spectrometer

Jun Aoki, Shinichiro Ikeda, Michisato Toyoda

Journal of the Physical Society of Japan　Vol. 83　No. 2　p. 023001-023001　2014/02/15　Research paper (scientific journal)

Real time monitoring of gases emitted from soils using a multi-turn time-of-flight mass spectrometer “MULTUM-S II”

Takahiro Anan, Shuichi Shimma, Yo Toma, Yasuyuki Hashidoko, Ryusuke Hatano, Michisato Toyoda

Environ. Sci.: Processes Impacts　Vol. 16　No. 12　p. 2752-2757　2014　Research paper (scientific journal)

[進歩総説]オンサイトマススペクトロメトリー

新間秀一, 豊田岐聡

ぶんせき　Vol. 468　No. 12　p. 731-737　2013/12

Development of Stigmatic Time-of-Flight Imaging Mass Spectrometer

Jun AOKI, Michisato TOYODA

Journal of the Mass Spectrometry Society of Japan　Vol. 61　No. 3　p. 23-33　2013/06　Research paper (scientific journal)

A Novel Sperm-Activating and Attracting Factor from the Ascidian Ascidia sydneiensis

Nobuaki Matsumori, Yuki Hiradate, Hajime Shibata, Tohru Oishi, Shuichi Shimma, Michisato Toyoda, Fumiaki Hayashi, Manabu Yoshida, Michio Murata, Masaaki Morisawa

Organic Letters　Vol. 15　No. 2　p. 294-297　2013/01/04　Research paper (scientific journal)

Ultra-High Mass Resolution Miniaturized Time-of-Flight Mass Spectrometer “infiTOF” for Rapid Analysis of Polychlorinated Biphenyls

Shuichi Shimma, Shinichi Miki, Robert B. Cody, Michisato Toyoda

Advanced Techniques in Gas Chromatography–Mass Spectrometry (GC–MS–MS and GC–TOF–MS) for Environmental Chemistry　p. 303-323　2013　Part of collection (book)

A Chemical Approach to Searching for Bioactive Ingredients in Cigarette Smoke

Yuta Takahashi, Shizuyo Horiyama, Chie Honda, Kiyoko Suwa, Kazuki Nakamura, Masaru Kunitomo, Shuichi Shimma, Michisato Toyoda, Hirofumi Sato, Motohiro Shizuma, Mitsuo Takayama

Chemical and Pharmaceutical Bulletin　Vol. 61　No. 1　p. 85-89　2013/01　Research paper (scientific journal)

Multi-Turn Time-of-Flight Mass Spectrometers

Michisato TOYODA, Shuichi SHIMMA, Jun AOKI, Morio ISHIHARA

Journal of the Mass Spectrometry Society of Japan　Vol. 60　No. 6　p. 87-102　2012/12　Research paper (scientific journal)

Proposal for the Mars life search equipments : Search for cells, aminoacids and methane

YAMAGISHI A., YOSHIMURA Y., NAGANUMA T.

Planetary People (Journal of the Japanese Society for Planetary Sciences)　Vol. 21　No. 2　p. 276-282　2012/09/25　Research paper (scientific journal)

Rapid Sequencing of a Peptide Containing a Single Disulfide Bond Using High-Energy Collision-Induced Dissociation

Takuma Degawa, Shuichi Shimma, Michisato Toyoda

European Journal of Mass Spectrometry　Vol. 18　No. 4　p. 345-348　2012/08/01　Research paper (scientific journal)

特集「月惑星探査の来たる10年:第二段階のまとめ」火星生命探査機器群提案 ー細胞,アミノ酸,メタン検出を目的としたー

山岸明彦, 吉村義隆, 長沼毅, 宮川厚夫, 出村裕英, 豊田岐聡, 本多元, 小林憲正, 三田肇, 大野宗祐, 石丸亮, 小林喬郎, 戸野倉賢一, 石上玄也, 佐々木晶, 宮本英昭

日本惑星科学会誌　Vol. 21　No. 3　p. 276-282　2012/06

Polychlorinated biphenyls (PCBs) analysis using a miniaturized high-resolution time-of-flight mass spectrometer “MULTUM-S II”

Shuichi Shimma, Shinichi Miki, Michisato Toyoda

Journal of Environmental Monitoring　Vol. 14　No. 6　p. 1664-1664　2012/06　Research paper (scientific journal)

Detailed Structural Analysis of Lipids Directly on Tissue Specimens Using a MALDI-SpiralTOF-Reflectron TOF Mass Spectrometer

Shuichi Shimma, Ayumi Kubo, Takaya Satoh, Michisato Toyoda

PLoS ONE　Vol. 7　No. 5　p. e37107-e37107　2012/05/18　Research paper (scientific journal)

個別観測機器提案「火星生命探査機器群提案」?細胞，アミノ酸，メタン検出を目的とした?

山岸明彦, 吉村義隆, 長沼毅, 宮川厚夫, 出村裕英, 豊田岐聡, 本多元, 小林憲正, 三田肇, 大野宗佑, 石丸亮, 小林喬郎, 戸野倉賢一, 石上玄也, 佐々木晶, 宮本英昭

遊星人（日本惑星科学会誌）　Vol. 21　p. 227-283　2012

Mass Spectrometry Imaging and Structural Analysis of Lipids Directly on Tissue Specimens by Using a Spiral Orbit Type Tandem Time-of-Flight Mass Spectrometer, SpiralTOF-TOF

Takaya Satoh, Ayumi Kubo, Shuichi Shimma, Michisato Toyoda

Mass Spectrometry　Vol. 1　No. 2　p. A0013-A0013　2012　Research paper (scientific journal)

Construction of a Newly Designed Small-Size Mass Spectrometer for Helium Isotope Analysis: Toward the Continuous Monitoring Of 3He/4He Ratios In Natural Fluids

Ken-ichi Bajo, Hirochika Sumino, Michisato Toyoda, Ryuji Okazaki, Takahito Osawa, Morio Ishihara, Itsuo Katakuse, Kenji Notsu, George Igarashi, Keisuke Nagao

Mass Spectrometry　Vol. 1　No. 2　p. A0009-A0009　2012　Research paper (scientific journal)

Novel Ion Extraction Method for Imaging Mass Spectrometry

Jun AOKI, Hisanao HAZAMA, Michisato TOYODA

Journal of the Mass Spectrometry Society of Japan　Vol. 59　No. 3　p. 57-61　2011/06　Research paper (scientific journal)

Evaluation of a Delay-Line Detector Combined with Analog-to-Digital Converters as the Ion Detection System for Stigmatic Imaging Mass Spectrometry

Hidetoshi Yoshimura, Hisanao Hazama, Jun Aoki, Michisato Toyoda, Yasuhide Naito, Kunio Awazu

Japanese Journal of Applied Physics　Vol. 50　No. 5R　p. 056701-056701　2011/05/01　Research paper (scientific journal)

Development of an Ejection Method from a Linear Ion Trap Using Plate Electrodes Inserted between Rod Electrodes

Hirofumi NAGAO, Hideaki KANOU, Kenichi IWAMOTO, Michisato TOYODA

Journal of the Mass Spectrometry Society of Japan　Vol. 59　No. 1　p. 13-17　2011/02　Research paper (scientific journal)

Development of a stigmatic mass microscope using laser desorption∕ionization and a multi-turn time-of-flight mass spectrometer

Hisanao Hazama, Hidetoshi Yoshimura, Jun Aoki, Hirofumi Nagao, Michisato Toyoda, Katsuyoshi Masuda, Kenichi Fujii, Toshio Tashima, Yasuhide Naito, Kunio Awazu

Journal of Biomedical Optics　Vol. 16　No. 4　p. 046007-046007　2011　Research paper (scientific journal)

Miniaturized High-Resolution Time-of-Flight Mass Spectrometer MULTUM-S II with an Infinite Flight Path

Shuichi Shimma, Hirofumi Nagao, Jun Aoki, Keiji Takahashi, Shinichi Miki, Michisato Toyoda

Analytical Chemistry　Vol. 82　No. 20　p. 8456-8463　2010/09/22　Research paper (scientific journal)

High-energy electron transfer dissociation (HE-ETD) using alkali metal targets for sequence analysis of post-translational peptides

Shigeo Hayakawa, Shinya Matsumoto, Mami Hashimoto, Kenichi Iwamoto, Hirofumi Nagao, Michisato Toyoda, Yasushi Shigeri, Michiko Tajiri, Yoshinao Wada

Journal of the American Society for Mass Spectrometry　Vol. 21　No. 9　p. 1482-1489　2010/09/01　Research paper (scientific journal)

Development of a tandem time-of-flight mass spectrometer with an electrospray ionization ion source

Hirofumi Nagao, Shuichi Shimma, Shigeo Hayakawa, Kunio Awazu, Michisato Toyoda

Journal of Mass Spectrometry　Vol. 45　No. 8　p. 937-943　2010/07/16　Research paper (scientific journal)

Letter: High-Energy Electron Transfer Dissociation Using a Tandem Time-of-Flight Mass Spectrometer with an Electrospray Ionization Ion Source

Hirofumi Nagao, Shuichi Shimma, Shigeo Hayakawa, Kunio Awazu, Michisato Toyoda

European Journal of Mass Spectrometry　Vol. 16　No. 4　p. 551-556　2010/02/01　Research paper (scientific journal)

Development of Multi-Turn Time-of-Flight Mass Spectrometers and Their Applications

Michisato Toyoda

European Journal of Mass Spectrometry　Vol. 16　No. 3　p. 397-406　2010/02/01　Research paper (international conference proceedings)

Unimolecular and Collision-Induced Dissociation of Singly-Charged Mono-Bromide Silver Clusters Ag_xBr⁺ (x = 2, 4, 6, 8, 10)

Hirofumi Nagao, Michisato Toyoda, Shigeo Hayakawa, Kenichi Iwamoto, Toshio Ichihara, Kazuya Kawamura, Kunio Awazu

European Journal of Mass Spectrometry　Vol. 15　No. 4　p. 459-469　2009/08　Research paper (scientific journal)

Development of a Tandem Mass Spectrometry Instrument for Probing High-Energy Electron Transfer Dissociation

Hirofumi NAGAO, Shigeo HAYAKAWA, Mami HASHIMOTO, Kenichi IWAMOTO, Michisato TOYODA, Yasushi SHIGERI, Mamiko JITOSHO, Kunio AWAZU

Journal of the Mass Spectrometry Society of Japan　Vol. 57　No. 3　p. 123-132　2009/06　Research paper (scientific journal)

Design of a new multi-turn ion optical system ‘IRIS’ for a time-of-flight mass spectrometer

Masaru Nishiguchi, Yoshihiro Ueno, Michisato Toyoda, Mitsutoshi Setou

Journal of Mass Spectrometry　Vol. 44　No. 5　p. 594-604　2009/05　Research paper (scientific journal)

Development of an Ion Trap/Multi-Turn Time-of-Flight Mass Spectrometer with Potential-Lift

Kenichi Iwamoto, Hirofumi Nagao, Michisato Toyoda

European Journal of Mass Spectrometry　Vol. 15　No. 2　p. 249-260　2009/04　Research paper (scientific journal)

Simulation of ion trajectories using the surface-charge method on a special purpose computer

J. Aoki, A. Kubo, M. Ishihara, M. Toyoda

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　Vol. 600　No. 2　p. 466-470　2009/03　Research paper (scientific journal)

Construction of a novel stigmatic MALDI imaging mass spectrometer

Hisanao Hazama, Jun Aoki, Hirofumi Nagao, Ren Suzuki, Toshio Tashima, Ken-ichi Fujii, Katsuyoshi Masuda, Kunio Awazu, Michisato Toyoda, Yasuhide Naito

Applied Surface Science　Vol. 255　No. 4　p. 1257-1263　2008/12　Research paper (scientific journal)

Computer program TRIO 2.0 for calculation and visualization of ion trajectories

Masaru Nishiguchi, Michisato Toyoda

Physics Procedia　Vol. 1　No. 1　p. 325-332　2008/08　Research paper (international conference proceedings)

Development of a tandem time-of-flight mass spectrometer “MULTUM-TOF/TOF” at Osaka University: Combination of a multi-turn time-of-flight mass spectrometer and a quadratic-field ion mirror

Michisato Toyoda, Anastassios E. Giannakopulos, Alex W. Colburn, Peter J. Derrick

Physics Procedia　Vol. 1　No. 1　p. 401-411　2008/08　Research paper (international conference proceedings)

Comparison of mass spectra of peptides in different matrices using matrix-assisted laser desorption/ionization and a multi-turn time-of-flight mass spectrometer, MULTUM-IMG

Hisanao Hazama, Hirofumi Nagao, Ren Suzuki, Michisato Toyoda, Katsuyoshi Masuda, Yasuhide Naito, Kunio Awazu

Rapid Communications in Mass Spectrometry　Vol. 22　No. 10　p. 1461-1466　2008/05/30　Research paper (scientific journal)

Why Can Reflectron and Multi-Turn Time-of-Flight Mass Spectrometer Improve Their Mass Resolving Powers?

Koichi TANAKA, Ken-ichi YOSHINO, Yasuhide NAITO, Michisato TOYODA

Journal of the Mass Spectrometry Society of Japan　Vol. 56　No. 2　p. 49-54　2008/04　Research paper (scientific journal)

High-energy collision-induced dissociation of phosphopeptides using a multi-turn tandem time-of-flight mass spectrometer ‘MULTUM-TOF/TOF’

Shuichi Shimma, Hirofumi Nagao, Anastassios E. Giannakopulos, Shigeo Hayakawa, Kunio Awazu, Michisato Toyoda

Journal of Mass Spectrometry　Vol. 43　No. 4　p. 535-537　2008/04　Research paper (scientific journal)

Study of the dissociation of a charge-reduced phosphopeptide formed by electron transfer from an alkali metal target

Shigeo Hayakawa, Mami Hashimoto, Hirofumi Nagao, Kunio Awazu, Michisato Toyoda, Toshio Ichihara, Yasushi Shigeri

Rapid Communications in Mass Spectrometry　Vol. 22　No. 4　p. 567-572　2008/02/28　Research paper (scientific journal)

Ion Optical Evaluation of a Miniature Double-Focusing Mass Spectrograph

Masaru Nishiguchi, Morio Ishihara, Itsuo Katakuse, Michisato Toyoda

European Journal of Mass Spectrometry　Vol. 14　No. 1　p. 7-15　2008/02　Research paper (scientific journal)

Construction of a Palmtop Size Multi-Turn Time-of-Flight Mass Spectrometer "MULTUM-S"

Toshio ICHIHARA, Satoshi UCHIDA, Morio ISHIHARA, Itsuo KATAKUSE, Michisato TOYODA

Journal of the Mass Spectrometry Society of Japan　Vol. 55　No. 6　p. 363-368　2007/12　Research paper (scientific journal)

Charge-Remote Fragmentation of Phospholipids in a Multi-Turn Tandem Time-of-Flight Mass Spectrometer"MULTUM-TOF/TOF"

Shuichi SHIMMA, Hirofumi NAGAO, Michisato TOYODA

Journal of the Mass Spectrometry Society of Japan　Vol. 55　No. 5　p. 343-351　2007/10　Research paper (scientific journal)

Potential crossing position in electron transfer of a doubly charged ion and an alkali metal target measured using thermometer molecule W(CO)6

Shigeo Hayakawa, Kaori Minami, Kenichi Iwamoto, Michisato Toyoda, Toshio Ichihara, Hirofumi Nagao

International Journal of Mass Spectrometry　Vol. 266　No. 1-3　p. 122-128　2007/10　Research paper (scientific journal)

Development of a Multi-Turn Time-of-Flight Mass Spectrometers and Their Applications

Michisato TOYODA

Shinku　Vol. 50　No. 4　p. 246-251　2007/10　Research paper (scientific journal)

Dissociation channels of silver bromide cluster Ag2Br, silver cluster Ag3 and their ions studied by using alkali metal target

H. Nagao, K. Awazu, S. Hayakawa, K. Iwamoto, M. Toyoda, T. Ichihara

The European Physical Journal D　Vol. 45　No. 2　p. 279-287　2007/09/19　Research paper (scientific journal)

High-energy collision induced dissociation fragmentation pathways of peptides, probed using a multiturn tandem time-of-flight mass spectrometer “MULTUM-TOF/TOF”

Michisato Toyoda, Anastassios E. Giannakopulos, Alex W. Colburn, Peter J. Derrick

Review of Scientific Instruments　Vol. 78　No. 7　p. 074101-074101　2007/07　Research paper (scientific journal)

Simulation of Beam Profile of Multi-Turn Time-of-Flight Mass Spectrometers

Michisato TOYODA, Masaru NISHIGUCHI

Journal of the Mass Spectrometry Society of Japan　Vol. 55　No. 1　p. 17-24　2007/02　Research paper (scientific journal)

Differences between the internal energy depositions induced by collisional activation and by electron transfer of W(CO)62+ ions on collision with Ar and K targets

Shigeo Hayakawa, Akihiro Kitaguchi, Satoko Kameoka, Michisato Toyoda, Toshio Ichihara

The Journal of Chemical Physics　Vol. 124　No. 22　p. 224320-224320　2006/06/14　Research paper (scientific journal)

Development of a Miniature Double Focusing Mass Spectrograph Using a Focal Plane Detector

Masaru NISHIGUCHI, Michisato TOYODA, Morio ISHIHARA, Makiko OHTAKE, Takamitsu SUGIHARA, Itsuo KATAKUSE

Journal of the Mass Spectrometry Society of Japan　Vol. 54　No. 1　p. 1-9　2006/02　Research paper (scientific journal)

Experimental and theoretical study on gas-phase ion/molecule reactions of silver trimer cation, Ag3+, with 12-crown-4

Kousuke Kumondai, Michisato Toyoda, Morio Ishihara, Itsuo Katakuse, Takae Takeuchi, Mai Ikeda, Kenichi Iwamoto

The Journal of Chemical Physics　Vol. 123　No. 2　p. 024314-024314　2005/07/08　Research paper (scientific journal)

A Tandem Time-of-Flight Mass Spectrometer: Combination of a Multi-Turn Time-of-Flight and a Quadratic Field Mirror

Michisato Toyoda, Anastassios E. Giannakopulos, Alex W. Colburn, Peter J. Derrick

European Journal of Mass Spectrometry　Vol. 11　No. 2　p. 181-187　2005/04　Research paper (scientific journal)

High-resolution time-of-flight spectra obtained using the MULTUM II multi-turn type time-of-flight mass spectrometer with an electron ionization ion source

D Okumura, M Toyoda, M Ishihara, Katakuse, I

EUROPEAN JOURNAL OF MASS SPECTROMETRY　Vol. 11　No. 3　p. 261-266　2005　Research paper (scientific journal)

Ion/Molecule Reactions of Silver Cluster Cations with Crown Ethers in a Cylindrical Ion Trap

Kousuke Kumondai, Michisato Toyoda, Kenichi Iwamoto, Morio Ishihara, Itsuo Katakuse

Japanese Journal of Applied Physics　Vol. 43　No. 10　p. 7282-7286　2004/10/08　Research paper (scientific journal)

A compact sector-type multi-turn time-of-flight mass spectrometer ‘MULTUM II’

Daisuke Okumura, Michisato Toyoda, Morio Ishihara, Itsuo Katakuse

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　Vol. 519　No. 1-2　p. 331-337　2004/02　Research paper (scientific journal)

Application of a multi-turn time-of-flight mass spectrometer, MULTUM II, to organic compounds ionized by matrix-assisted laser desorption/ionization

Daisuke Okumura, Michisato Toyoda, Morio Ishihara, Itsuo Katakuse

Journal of Mass Spectrometry　Vol. 39　No. 1　p. 86-90　2004/01/29　Research paper (scientific journal)

Multi-turn time-of-flight mass spectrometers with electrostatic sectors

Michisato Toyoda, Daisuke Okumura, Morio Ishihara, Itsuo Katakuse

Journal of Mass Spectrometry　Vol. 38　No. 11　p. 1125-1142　2003/11　Research paper (scientific journal)

A simple Multi-Turn Time of Fight Mass Spectrometer 'MULTUM II'

Daisuke Okumura, Michisato Toyoda, Morio Ishihara, Itsuo Katakuse

J. Mass Spectrom. Soc. Jpn., 51, 349-353　Vol. 51　No. 2　p. 349-353　2003/04　Research paper (scientific journal)

Development of an Ion Trap for an Ion Source of a Time-of-Flight Mass Spectrometer

Kousuke KUMONDAI, Michisato TOYODA, Kenichi IWAMOTO, Daisuke OKUMURA, Morio ISHIHARA, Masahiro KIMURA, Itsuo KATAKUSE

J. Mass Spectrom. Soc. Jpn.　Vol. 50　No. 5　p. 217-222　2002/10　Research paper (scientific journal)

Development of a TOF Mass Spectrometer Using a Sector Magnet and Detection of Cluster Dissociations

Satoshi TOMIE, Yoshihiro MANABE, Hiroki SAKAE, Takaya SATOH, Michisato TOYODA, Toshio ICHIHARA, Itsuo KATAKUSE

J. Mass Spectrom. Soc. Jpn.　Vol. 50　No. 5　p. 213-216　2002/10　Research paper (scientific journal)

Developement of a Mass Spectrograph for Future Planetary Exploration

Takamitsu Sugihara, Makiko Ohtake, Morio Ishihara, Michisato Toyoda, Fumio Kunihiro, Masao Shimizu

Vol. 49　No. 2　p. 69-73　2001/02　Research paper (scientific journal)

Development of a Potential-Lift Ion Source.

Daisuke OKUMURA, Kousuke KUMONDAI, Shin-ichi YAMAGUCHI, Michisato TOYODA, Morio ISHIHARA, Itsuo KATAKUSE

Journal of the Mass Spectrometry Society of Japan　Vol. 48　No. 5　p. 357-359　2000/10　Research paper (scientific journal)

Development of a Multi-Turn Time-of-Flight Mass Spectrometer'MULTUM Linear plus'.

Michisato TOYODA, Daisuke OKUMURA, Shin-ichi YAMAGUCHI, Morio ISHIHARA, Itsuo KATAKUSE, Takekiyo MATSUO

Journal of the Mass Spectrometry Society of Japan　Vol. 48　No. 5　p. 312-317　2000/10　Research paper (scientific journal)

Developement of a Multi-turn Time-of-Flight Mass Spectrometer for Planetary and Cometary Investigation

Michisato Toyoda, Daisuke Okumura, Shin-ichi Yamaguchi, Morio Ishihara, Itsuo Katakuse, Takekiyo Matsuo

Vol. 9　No. 2　p. 103-108　2000/04　Research paper (scientific journal)

Construction of a new multi-turn time-of-flight mass spectrometer

Michisato Toyoda, Morio Ishihara, Shin-ichi Yamaguchi, Hiroyuki Ito, Takekiyo Matsuo, Reinhard Roll, Helmut Rosenbauer

Journal of Mass Spectrometry　Vol. 35　No. 2　p. 163-167　2000/02　Research paper (scientific journal)

Perfect space and time focusing ion optics for multiturn time of flight mass spectrometers

Morio Ishihara, Michisato Toyoda, Takekiyo Matsuo

International Journal of Mass Spectrometry　Vol. 197　No. 1-3　p. 179-189　2000/02　Research paper (scientific journal)

Computer program “TRIO-DRAW” for displaying ion trajectory and flight time

Michisato Toyoda, Takekiyo Matsuo

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment　Vol. 427　No. 1-2　p. 375-381　1999/05　Research paper (scientific journal)

A space time-of-flight mass spectrometer for exobiologically-oriented applications

T Matsuo, M Ishihara, M Toyoda, H Ito, S Yamaguchi, R Roll, H Rosenbauer

Advances in Space Research　Vol. 23　No. 2　p. 341-348　1999/01　Research paper (scientific journal)

Measurement of Decay Lifetime of Metastable Dye Molecular Ions by Using Ion Trap

Michisato Toyoda, Masahiro Kimura, Takekiyo Matsuo

Journal of the Physical Society of Japan　Vol. 66　No. 5　p. 1321-1323　1997/05/15　Research paper (scientific journal)

Ion optics for multi-turn time-of-flight mass spectrometers with variable mass resolution

Takekiyo Matsuo, Michisato Toyoda, Toru Sakurai, Mono Ishihara

Journal of Mass Spectrometry　Vol. 32　No. 11　p. 1179-1185　1997　Research paper (scientific journal)

Third-order ion trajectory calculations of Wien filters

T. Sakurai, M. Toyoda, H. Hayashibara, T. Matsuo

International Journal of Mass Spectrometry and Ion Processes　Vol. 146-147　p. 217-222　1995/08　Research paper (scientific journal)

Third-order transfer matrix for crossed electric and magnetic fields calculated algebraically using a symbolic computation program

M. Toyoda, H. Hayashibara, T. Sakurai, T. Matsuo

International Journal of Mass Spectrometry and Ion Processes　Vol. 146-147　p. 195-216　1995/08　Research paper (scientific journal)