Probing doubly excited ionic states of [Formula Presented] via a triple excitation above the N [Formula Presented] threshold in the [Formula Presented] molecule

R. Feifel, K. Ueda, A. De Fanis, K. Okada, S. Tanimoto, T. Furuta, H. Shindo, M. Kitajima, H. Tanaka, O. Björneholm, L. Karlsson, S. Svensson, S. L. Sorensen

研究成果: Article査読

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 [Formula Presented] core electron and two valence electrons are promoted into the lowest unoccupied molecular orbital [Formula Presented] 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 [Formula Presented] much smaller than 2. We assign this new band to the transition to a doubly excited cationic state of [Formula Presented] in which two of the excited valence electrons remain in the [Formula Presented] orbital, proposing a “double spectator” type decay mechanism. This observation shows how to preferentially probe multiply excited configurations of cations using multiple resonant excitation.

本文言語English
ページ(範囲)4
ページ数1
ジャーナルPhysical Review A - Atomic, Molecular, and Optical Physics
67
3
DOI
出版ステータスPublished - 2003
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学

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