Double and Triple Photoionization of Ground-State Lithium

Journal Article · Sun Nov 01 04:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.81.4333· OSTI ID:664732

van der Hart, H W; Greene, C H ^[1]

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1. Department of Physics and JILA, University of Colorado, Boulder, Colorado 80309-0440 (United States)

The double and triple photoionization of ground-state lithium is investigated in the high-energy limit. Relative to the total photoionization cross section, the fraction of two-electron escape processes is 0.0325, while the fraction leading to triple escape is only 5.6{times}10{sup {minus}6} . Double ionization via Li{sup +} autoionizing states accounts for more than 40{percent} of the two-electron escape processes. A comparison of the high-energy-limit calculations with experiments at 424thinspthinspeV shows close agreement for double photoionization. A factor of 10 discrepancy exists for triple photoionization at 424thinspthinspeV, however, which presumably indicates that the high-energy limit has not yet been reached. {copyright} {ital 1998} {ital The American Physical Society }

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 664732
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 20 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
GROUND STATES
LITHIUM
MULTICHARGED IONS
PHOTOIONIZATION