TY - JOUR
T1 - Angular correlation in the two-electron continuum
AU - Kheifets, A. S.
AU - Bray, I.
PY - 2006
Y1 - 2006
N2 - Following absorption of a single photon, angles of simultaneous emission of two electrons from a He (n S1) 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+ (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 H2.
AB - Following absorption of a single photon, angles of simultaneous emission of two electrons from a He (n S1) 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+ (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 H2.
UR - http://www.scopus.com/inward/record.url?scp=33644537369&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.73.020708
DO - 10.1103/PhysRevA.73.020708
M3 - Article
SN - 1050-2947
VL - 73
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 2
M1 - 020708
ER -