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Title: Charge transfer to ground-state ions produces free electrons
Authors: You, D.
Fukuzawa, H.
Sakakibara, Y.
Takanashi, T.
Ito, Y.
Maliyar, G. G.
Motomura, K.
Nagaya, K.
Nishiyama, T.
Asa, K.
Sato, Y.
Saito, N.
Oura, M.
Schöffler, M.
Kastirke, G.
Hergenhahn, U.
Stumpf, V.
Gokhberg, K.
Kuleff, A. I.
Cederbaum, L. S.
Ueda, K
Author's alias: 福澤, 宏宣
永谷, 清信
齋藤, 則生
大浦, 正樹
セダーバウム, ローレンツ
上田, 潔
Issue Date: 30-Jan-2017
Publisher: Springer Nature
Journal title: Nature Communications
Volume: 8
Thesis number: 14277
Abstract: Inner-shell ionization of an isolated atom typically leads to Auger decay. In an environment, for example, a liquid or a van der Waals bonded system, this process will be modified, and becomes part of a complex cascade of relaxation steps. Understanding these steps is important, as they determine the production of slow electrons and singly charged radicals, the most abundant products in radiation chemistry. In this communication, we present experimental evidence for a so-far unobserved, but potentially very important step in such relaxation cascades: Multiply charged ionic states after Auger decay may partially be neutralized by electron transfer, simultaneously evoking the creation of a low-energy free electron (electron transfer-mediated decay). This process is effective even after Auger decay into the dicationic ground state. In our experiment, we observe the decay of Ne[2+] produced after Ne 1s photoionization in Ne–Kr mixed clusters.
Description: 安定なイオンが周囲の原子の電子をキャッチ&リリース! --X線照射による生体分子損傷の機構解明に貢献--. 京都大学プレスリリース. 2017-02-01.
Rights: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
URI: http://hdl.handle.net/2433/217934
DOI(Published Version): 10.1038/ncomms14277
PubMed ID: 28134238
Related Link: https://www.kyoto-u.ac.jp/ja/research-news/2017-02-01
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