Single-photon double ionization of He and Ne

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.46.5574· OSTI ID:7198638

Bartlett, R J; Walsh, P J ^[1]; He, Z X; Chung, Y; Lee, E; Samson, J A.R. ^[2]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Behlen Laboratory of Physics, University of Nebraska, Lincoln, Nebraska 68588-0111 (United States)

The photoionization branching ratio for double ionization has been measured from threshold to 800 eV for Ne and from threshold to 560 eV for He. Both sets of data have an initial rise from threshold, in general agreement with other published results, but the Ne data reach a plateau value above threshold in contrast to some of the other measurements and to the He data. The Ne data reach a value of approximately 13%, while the He data approach a value of approximately 4% before decreasing. A plateau in the He data was not reached in our measurements but may exist at higher energies. The photoionization cross section for double ionization has been extracted from the branching-ratio data.

• OSTI ID: 7198638
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 46:9; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
BRANCHING RATIO
CROSS SECTIONS
ELEMENTS
ENERGY
ENERGY DEPENDENCE
ENERGY RANGE
EV RANGE
FLUIDS
GASES
HELIUM
IONIZATION
NEON
NONMETALS
PHOTOIONIZATION
RARE GASES
THRESHOLD ENERGY