Imaging of Direct Photodetachment and Autodetachment of [Formula presented]: Excited-State Dynamics of the Covalent Dimer Anion

Eric Surber, Andrei M Sanov

Research output: Contribution to journalArticle

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Abstract

We report a photoelectron imaging study of [Formula presented] and compare the results to [Formula presented]. Two electron-emission mechanisms are observed for the dimer anion: direct photodetachment and autodetachment, while [Formula presented] exhibits only the direct mechanism. The results provide evidence of covalent [Formula presented] coexisting with the [Formula presented] cluster anion. The autodetachment originating from the covalent species is modeled as thermionic emission transpiring in the regime of fragmentation. The bulk statistical model is found applicable to the small anion due to the availability of low-lying excited states.

Original languageEnglish (US)
Number of pages1
JournalPhysical Review Letters
Volume90
Issue number9
DOIs
Publication statusPublished - Jan 1 2003

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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