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Effects of molecular axis orientation of MeV diatomic projectiles on secondary ion emission from biomolecular targets
https://repo.qst.go.jp/records/80895
https://repo.qst.go.jp/records/80895c24142d0-a9e3-4124-afd6-548005295887
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-11-05 | |||||
タイトル | ||||||
タイトル | Effects of molecular axis orientation of MeV diatomic projectiles on secondary ion emission from biomolecular targets | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Murase, Ryu
× Murase, Ryu× Tsuchida, Hidetsugu× Tomita, Shigeo× Chiba, Atsuya× Nakajima, Kaoru× Majima, Takuya× Saito, Manabu× Atsuya, Chiba |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We report first experimental results on the orientation effect of fast diatomic molecular projectiles on secondary ion emission processes for 3.6-MeV C2+ traversing a self-supporting target of phenylalanine (Phe) film evaporated on a carbon foil. Coincidence measurements were performed on the image of fragments resulting from the Coulomb explosion of C2+ projectiles and the time-of-flight mass spectrometry of secondary ions emitted from the Phe film. We compared the secondary ion yield for C2+ projectiles with parallel and perpendicular orientations to the beam direction. The parallel orientation was found to enhance the secondary ion yield by a factor of approximately 1.1 compared with that for the perpendicular orientation. This enhancement corresponds to an increase in the average charge of Coulomb-exploded fragments. This finding implies that there is a linear correlation between the electronic energy deposition causing secondary ion production and the effective charge number of the incident molecular ions which interact with biomolecular targets. | |||||
書誌情報 |
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 巻 478, p. 284-289, 発行日 2020-11 |
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出版者 | ||||||
出版者 | Elsevier | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0168-583X | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.nimb.2020.07.010 | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.sciencedirect.com/science/article/pii/S0168583X20303402 |