Year: 1967
Type: article
Abstract: The (M/q)*=10 peak in the mass spectrum of argon observed at ionizing electron energies of 40 to 120 eV (uncorr.), is shown to consist of approximately equal contributions from: (1) surface-induced transitions of an excited Ar+ ion to Ar2+ at the last ion-source slit, and (2) an autoionization of an excited Ar+ ion after the last ion-source slit. By use of an auxiliary slit beyond the last normal ion-source slit, these two processes were separable, and it is shown that the excited state undergoing surface-induced transitions is a different state than that undergoing autoionization, with the autoionizing state having an A.P. of 0.5±0.2 eV higher than the state undergoing surface-induced transitions. The existence of autoionizing states of Ne+ and Ar2+ was also confirmed.
Source: The Journal of Chemical Physics
DOI: 10.1063/1.1701709
Authors: Amos S. Newton, A. F. Sciamanna, R. Clampitt
Language: English
Topic: Atomic and Molecular Physics
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2051695035