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Title: Real-time observation of X-ray-induced intramolecular and interatomic electronic decay in CH2I2
Authors: Fukuzawa, Hironobu
Takanashi, Tsukasa
Kukk, Edwin
Motomura, Koji
Wada, Shin-ichi
Nagaya, Kiyonobu
Ito, Yuta
Nishiyama, Toshiyuki
Nicolas, Christophe
Kumagai, Yoshiaki
Iablonskyi, Denys
Mondal, Subhendu
Tachibana, Tetsuya
You, Daehyun
Yamada, Syuhei
Sakakibara, Yuta
Asa, Kazuki
Sato, Yuhiro
Sakai, Tsukasa
Matsunami, Kenji
Umemoto, Takayuki
Kariyazono, Kango
Kajimoto, Shinji
Sotome, Hikaru
Johnsson, Per
Schöffler, Markus S.
Kastirke, Gregor
Kooser, Kuno
Liu, Xiao-Jing
Asavei, Theodor
Neagu, Liviu
Molodtsov, Serguei
Ochiai, Kohei
Kanno, Manabu
Yamazaki, Kaoru
Owada, Shigeki
Ogawa, Kanade
Katayama, Tetsuo
Togashi, Tadashi
Tono, Kensuke
Yabashi, Makina
Ghosh, Aryya
Gokhberg, Kirill
Cederbaum, Lorenz S.
Kuleff, Alexander I.
Fukumura, Hiroshi
Kishimoto, Naoki
Rudenko, Artem
Miron, Catalin
Kono, Hirohiko
Ueda, Kiyoshi
Author's alias: 福澤, 宏宣
高梨, 司
本村, 幸治
和田, 真一
永谷, 清信
伊藤, 雄太
西山, 俊幸
熊谷, 嘉晃
榊原, 悠太
浅, 和貴
佐藤, 由比呂
梅本, 嵩之
仮屋薗, 寛悟
梶本, 真司
五月女, 光
落合, 宏平
菅野, 学
山崎, 馨
大和田, 成起
小川, 奏
片山, 哲夫
富樫, 格
登野, 健介
矢橋, 牧名
福村, 裕史
岸本, 直樹
河野, 裕彦
上田, 潔
Keywords: Atomic and molecular interactions with photons
Chemical physics
Free-electron lasers
Issue Date: 16-May-2019
Publisher: Springer Science and Business Media LLC
Journal title: Nature Communications
Volume: 10
Thesis number: 2186
Abstract: The increasing availability of X-ray free-electron lasers (XFELs) has catalyzed the development of single-object structural determination and of structural dynamics tracking in real-time. Disentangling the molecular-level reactions triggered by the interaction with an XFEL pulse is a fundamental step towards developing such applications. Here we report real-time observations of XFEL-induced electronic decay via short-lived transient electronic states in the diiodomethane molecule, using a femtosecond near-infrared probe laser. We determine the lifetimes of the transient states populated during the XFEL-induced Auger cascades and find that multiply charged iodine ions are issued from short-lived (∼20 fs) transient states, whereas the singly charged ones originate from significantly longer-lived states (∼100 fs). We identify the mechanisms behind these different time scales: contrary to the short-lived transient states which relax by molecular Auger decay, the long-lived ones decay by an interatomic Coulombic decay between two iodine atoms, during the molecular fragmentation.
Description: X線照射で始まる超高速反応の観測に成功 --レントゲンによるX線の発見から120年で初--. 京都大学プレスリリース. 2019-05-28.
Rights: © The Author(s) 2019. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
DOI(Published Version): 10.1038/s41467-019-10060-z
PubMed ID: 31097703
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