Angular correlation in the two-electron continuum

Journal Article · Wed Feb 15 00:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.73.020708· OSTI ID:20974497

Kheifets, A S; Bray, I ^[1]

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1. Research School of Physical Sciences, Australian National University, Canberra ACT 0200 (Australia)

Following absorption of a single photon, angles of simultaneous emission of two electrons from a He(n {sup 1}S) atom become more correlated with increasing n. We find that the strength of this correlation is due to the two-electron continuum of the electron-impact ionization of the He{sup +}(ns) ion. The strength is determined by the width of the momentum profile of the ionic ns state but not the strength of the electron correlation in the He initial state. This can explain the increasing (over He) angular correlation strength found in double photoionization of targets such as Be, Ne, and H{sub 2}.

• OSTI ID: 20974497
• Journal Information: Physical Review. A, Vol. 73, Issue 2; Other Information: DOI: 10.1103/PhysRevA.73.020708; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ANGULAR CORRELATION
ATOMS
BERYLLIUM
ELECTRON CORRELATION
ELECTRON-ATOM COLLISIONS
ELECTRONS
EMISSION
HELIUM
HELIUM IONS
HYDROGEN
MOLECULES
NEON
PHOTOIONIZATION
PHOTONS