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ID 20638
本文ファイル
著者
Ibuki, Toshio
Itoh, Shin-ichi
Tamenori, Yusuke
Nagaoka, Shin-ichi
Morishita, Yuichiro
Suzuki, Isao H.
キーワード
K-shell excitation
Ultrafast dissociation
Auger electron spectroscopy
Asymmetry parameter
NDC
化学
抄録(英)
Atomiclike Auger electron emission was observed in resonant excitation of F1s electron into the σ*CSF molecular orbital of CF3SF5. This finding means that an S-F bond forming the C-S-F linear skeleton in the ground state dissociates in the order of femto-seconds. The Auger electron emitted from the F atom showed a Doppler shift by using angle-resolved photoelectron spectroscopy. Asymmetry parameter for the leaving F atom relative to the linearly polarized electric vector was deduced to be β = 1.9 at high photon energy of 688.7 eV and a value of β = 1.1 by detuning the photon energy down to 686.8 eV. The variation of β on the exciting energies projects a profile that an axial recoil approximation effectively works for the ultrafast S-F dissociation when the F1s-1σ*CSF state is generated at high energy level on the σ*CSF potential curve but retardation effects between the F and CF3SF4 fragments become noticeable at low energy level where kinetic energy of the F atom gets smaller.
掲載誌名
Journal of Electron Spectroscopy and Related Phenomena
154巻
3号
開始ページ
53
終了ページ
59
出版年月日
2007-02
出版者
Elsevier Science B.V.
ISSN
0368-2048
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2006 Elsevier B.V.
関連情報URL
部局名
理学研究科