2007年3月
Secondary ion emission from bio-molecular thin films under ion bombardment
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
- ,
- ,
- 巻
- 256
- 号
- 1
- 開始ページ
- 489
- 終了ページ
- 492
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.nimb.2006.12.073
- 出版者・発行元
- ELSEVIER SCIENCE BV
We studied the secondary ion emission from arginine amino acid films bombarded with 500 keV Au ions and compared the secondary ion intensities with those under 10 keV Ar ion bombardment. A high sputtering yield of the protonated arginine ions (m/z 175) and a reduction in ion fragmentation were observed for 500 keV Au ions. In addition, the molecular ion yield was compared to the yield measured with plasma desorption mass spectrometry (PDMS), and the data in this study did not show the tendency for the PDMS dependence. To the authors' knowledge, this work is the first observation of the secondary ion emission for bio-molecular samples in the sub-MeV-energy range and the experimental results can give insights into the fundamental process of particle emission from bio-molecular samples. (c) 2006 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.nimb.2006.12.073
- ISSN : 0168-583X
- Web of Science ID : WOS:000245959300097