Probing doubly excited ionic states of N2+ via a triple excitation above the N 1s threshold in the N2 molecule

Physical review A 67 巻 3 号 032504-1-032504-4 頁 2003 発行
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タイトル ( eng )
Probing doubly excited ionic states of N2+ via a triple excitation above the N 1s threshold in the N2 molecule
作成者
Feifel R.
Ueda K.
Fanis A.De
Tanimoto S.
Furuta T.
Shindo H.
Kitajima M.
Tanaka H.
Björneholm O.
Karlsson L.
Svensson S.
Sorensen S.L.
収録物名
Physical review A
67
3
開始ページ 032504-1
終了ページ 032504-4
抄録
Angle-resolved resonant Auger-electron spectroscopy has been carried out on the nitrogen molecule at selected photon energies around 419 eV, where a 1s core electron and two valence electrons are promoted into the lowest unoccupied molecular orbital 1πg. Significant enhancement of a specific band, which cannot be disentangled in direct photoionization, is observed at a binding energy of 37.6 eV, with a value of the anisotropy parameter β much smaller than 2. We assign this new band to the transition to a doubly excited cationic state of N2, in which two of the excited valence electrons remain in the 1πg orbital, proposing a "double spectator" type decay mechanism. This observation shows how to preferentially probe multiply excited configurations of cations using multiple resonant excitation.
NDC分類
化学 [ 430 ]
言語
英語
資源タイプ 学術雑誌論文
出版者
The American Physical Society
発行日 2003
権利情報
Copyright (c) 2003 The American Physical Society
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 1050-2947
[DOI] http://dx.doi.org/10.1103/PhysRevA.67.032504 ~の異版である