Ionization-excitation of helium at high photon energies

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

OSTI ID:394297

Wehlitz, R; Sellin, I A ^[1]; Hemmers, O; Whitfield, S B; Lindle, D W ^[2]

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1. Univ. of Tennessee, Knoxville, TN (United States)
2. Univ. of Nevada, Las Vegas, NV (United States); and others

Somewhat neglected in the extensive recent literature concerning the ratio of double-to-single photoionization in He is the important role of single ionization with excitation compared to the single ionization alone. Therefore, the authors have undertaken the study of the intensity and angular distribution of helium satellites relative to the main photoline as a function of photon energy especially at photon energies well above threshold. The measurements were performed at Hasylab and at the ALS using 2 Time-of-Flight spectrometers. While the results for the angular distribution of the satellites are already published, the authors put here emphasis on the satellite-to-main-line ratio and its high energy asymptotic limit. Their results will be compared to theoretical calculations.

• OSTI ID: 394297
• 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
ANGULAR DISTRIBUTION
EXCITATION
HELIUM
IONIZATION
SYNCHROTRON RADIATION