TY - JOUR
T1 - Angular anisotropy parameters and recoil-ion momentum distribution in two-photon double ionization of helium
AU - Kheifets, A. S.
AU - Ivanov, I. A.
AU - Bray, Igor
PY - 2007/8/28
Y1 - 2007/8/28
N2 - We present convergent-close-coupling (CCC) calculations of the angular anisotropy parameters β2, β4 and the recoil ion momentum distribution dσ dp in two-photon double ionization (TPDI) of helium. In a stark contrast to single-photon double ionization (SPDI), where the β2 parameter varies widely changing the angular distribution from isotropic to nearly dipole for slow and fast photoelectrons, respectively, the β parameters for TPDI show very little change. The angular distribution of the recoil ion is fairly isotropic in TPDI as opposed to a strong alignment with the polarization of light in SPDI.
AB - We present convergent-close-coupling (CCC) calculations of the angular anisotropy parameters β2, β4 and the recoil ion momentum distribution dσ dp in two-photon double ionization (TPDI) of helium. In a stark contrast to single-photon double ionization (SPDI), where the β2 parameter varies widely changing the angular distribution from isotropic to nearly dipole for slow and fast photoelectrons, respectively, the β parameters for TPDI show very little change. The angular distribution of the recoil ion is fairly isotropic in TPDI as opposed to a strong alignment with the polarization of light in SPDI.
UR - http://www.scopus.com/inward/record.url?scp=34548276464&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.76.025402
DO - 10.1103/PhysRevA.76.025402
M3 - Article
SN - 1050-2947
VL - 76
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 2
M1 - 025402
ER -