2010 Fiscal Year Final Research Report
STUDY OF ELECTRONIC AND PHOTONIC COLLISIONS WITH MOLECULES USING A STORAGE RING FOR BIOMOLECULAR IONS
| Project/Area Number |
20612019
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Quantum beam science
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| Research Institution | High Energy Accelerator Research Organization |
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Principal Investigator |
TANABE Tetsumi 大学共同利用機関法人高エネルギー加速器研究機構, 名誉教授 (20013394)
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| Co-Investigator(Renkei-kenkyūsha) |
NODA Koji 独立行政法人放射線医学総合研究所, 重粒子医科学センター, 加速器開発室長 (80228329)
SAITO Manabu 京都府立大学, 生命環境科学研究科, 准教授 (60235075)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 加速器 / 静電型イオン貯蔵リング / 原子・分子物理 / 電子-イオン衝突 / 電子捕獲解離 / 光解離 / 生体分子 / 気相 |
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| Research Abstract |
Electron-ion and photon-ion interactions were studied for various biomolecules by using an electrostatic storage ring. For the electron collisions with DNA cations and S-S bonded peptide cations, strong resonances originated from electron-capture-dissociation were observed at around 4.5 and 6 eV, respectively. Furthermore, with the laser irradiation, photo-dissociation processes were studied for GFP(green fluorescent protein) chromophore anions. The lifetimes of photoexcited anions depend on the storage time of ions. This is due to the relaxation process of precursorions.
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