WB 5 double ionization of He by proton impact at large energy transfer

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

OSTI ID:394108

Wu, W; Datz, S; Jones, N L; Krause, H F; Vane, C R ^[1]

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1. Oak Ridge National Lab., TN (United States); and others

The ratio R ({Delta}E) of double- to single-ionization cross section of He by 2-6 MeV proton impact has been measured as a function of energy transfer ({Delta}E), determined by analyzing and proton energy after collision using the Elbek magnetic spectrograph. The ratio, at the same energy transfer, is observed to be relatively independent of proton energy within experimental error. R ({Delta}E), however, decreases with increasing energy transfer from 2% at {Delta}E = 1 keV to about 0.8% at {Delta}E=10 KeV. Further comparisons of these ratios with those obtained from photoionization and Compton scattering have been made.

• DOE Contract Number: AC05-96OR22464
• OSTI ID: 394108
• 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
CROSS SECTIONS
ENERGY TRANSFER
HELIUM
ION-ATOM COLLISIONS
IONIZATION
MEV RANGE 01-10
PARAMETRIC ANALYSIS
PROTONS