Measurement of inelastic electron impact on ozone: Absolute differential cross sections for excitation of the Hartley band

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.53.1576· OSTI ID:279023

Sweeney, C J; Shyn, T W ^[1]

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1. Space Physics Research Laboratory, University of Michigan, Ann Arbor, Michigan 48109-2143 (United States)

By means of a crossed-beam technique, we have conducted absolute differential cross-section measurements for the excitation of ozone{close_quote}s Hartley band by electron impact. The angular range covered was from 12{degree} to 156{degree}, while the impact energies employed were 7, 10, 15, and 20 eV. The angular distributions indicate that the Hartley band has a composite nature, arising from at least one optically allowed and at least one optically forbidden transition. Candidates for these transitions are indicated with help from the results of theoretical calculations. Unfortunately, aside from the well known 1{sup 1}{ital B}{sub 2}{l_arrow}{ital X}{sup 1}{ital A}{sub 1} allowed transition observed in optical spectra, definitive assignments for these transitions cannot yet be made. Integrated cross sections were calculated from the measured differential cross sections. The former exhibit a maximum near 15-eV impact. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 279023
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 3 Vol. 53; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTRON-MOLECULE COLLISIONS
EV RANGE
EXCITATION
EXCITED STATES
INELASTIC SCATTERING
OZONE