Document Type

Article

Publication Date

5-2001

Publication Title

Physical Review Letters

Publisher

American Physical Society

Volume

86

Issue

20

First page number:

4504

Last page number:

4507

Abstract

Anion-yield spectroscopy using x rays is shown to be a selective probe of molecular core-level processes, providing unique experimental verification of shape resonances. For CO, partial anion and cation yields are presented for photon energies near the C K edge. The O- yield exhibits features above threshold related only to doubly excited states, in contrast to cation yields which also exhibit pronounced structure due to the well-known σ* shape resonance. Because the shape resonance is completely suppressed for O-, anion spectroscopy thus constitutes a highly selective probe, yielding information unobtainable with absorption or electron spectroscopy.

Controlled Subject

Carbon monoxide; Nuclear excitation; Photoionization; X-ray Spectroscopy

Disciplines

Atomic, Molecular and Optical Physics | Physical Chemistry

File Format

pdf

File Size

172 KB

Language

English

Permissions

Copyright American Physical Society. Used with permission.

Rights

IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

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