Consistency test of double ionization of helium by photons and charged particles

Journal Article · Wed May 01 04:00:00 EDT 1996 · Bulletin of the American Physical Society

DOI:https://doi.org/10.1103/PhysRevA.54.613· OSTI ID:394256

Wang, J; McGuire, J G; Burgdoerfer, J ^[1]

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1. Univ. of Tennessee, Knoxville, TN (United States)

The authors have performed a consistency test of recent data for the ratios of cross sections of double to single ionization of helium by photons and by fast charged particles. It is based on a relationship that connects the dipole and nondipole components for cross sections by charged particle impact to photoionization and Compton scattering, respectively. The authors find the high energy ratio R{sub z} for charged particles to be a sensitive probe of the photoionization data near threshold. Using recent experimental and theoretical data for photoionization, the asymptotic ratio R{sub z} is found to range from 0.240% to 0.295%, as compared with direct experimental measurement of 0.26%.

• Sponsoring Organization: USDOE
• OSTI ID: 394256
• Report Number(s): CONF-9605105--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 41; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COMPTON EFFECT
COULOMB IONIZATION
CROSS SECTIONS
HELIUM
PHOTOIONIZATION