Kinetic Energy Study of the Ion Fragments Produced by Dissociative Photoionization of Nitric Oxide

Authors

Y. Lu, Behlen Laboratory of PhysicsFollow
Wayne C. Stolte, University of Nevada, Las VegasFollow
James A.R. Samson, Behlen Laboratory of PhysicsFollow

Document Type

Article

Publication Date

12-1997

Publication Title

Journal of Electron Spectroscopy and Related Phenomena

Volume

87

Issue

2

First page number:

109

Last page number:

120

Abstract

The kinetic energy distribution spectra of the ion fragments N⁺ and O⁺ produced by dissociative photoionization of NO and the dissociative photoionization efficiency curve for the ion fragments with specific kinetic energies are observed at photon energies from 19 to 60 eV. Three groups of N⁺ fragments are observed with their kinetic energies centered at 0, 0.32 and 1.1 eV, respectively. The two groups of energetic N⁺ fragments correspond to the predissociation of the c ³π and B′ ¹∑⁺ states of NO⁺, respectively. These two states are found to predissociate primarily into N⁺ (³P) + O(³P). Shape resonances are found for the c ³π and B′ ¹∑⁺ states centered at about 28.7 and 29 eV respectively. The O⁺ fragments are found to have a continuous kinetic energy distribution concentrated in the region from 0 to 0.6 eV. The dissociations proceeded mainly through the vibrational levels of the ionic states of NO leading to N⁺ (³P) + O(³P). By use of the undispersed synchrotron radiation, the O⁻fragment is found to have a continuous kinetic energy distribution concentrated from 0 to 2 eV.

Keywords

Dissociative photoionization; Fragmentation reactions; Ion fragment; Ionization; Kinetic energy; Nitric oxide; Synchrotron radiation

Disciplines

Analytical Chemistry | Atomic, Molecular and Optical Physics | Biological and Chemical Physics | Elementary Particles and Fields and String Theory | Physical Chemistry

Language

English

Permissions

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Repository Citation

Lu, Y., Stolte, W. C., Samson, J. A. (1997). Kinetic Energy Study of the Ion Fragments Produced by Dissociative Photoionization of Nitric Oxide. Journal of Electron Spectroscopy and Related Phenomena, 87(2), 109-120.