Open AccessFully Differential Cross Sections for Photo-Double-Ionization ofD 2
Author(s) -
Th. Weber,
A. Czasch,
O. Jagutzki,
A. Müller,
V. Mergel,
A. S. Kheifets,
James M. Feagin,
Eli Rotenberg,
G. Meigs,
M. H. Prior,
S. Daveau,
A. L. Landers,
C. L. Cocke,
T. Osipov,
H. SchmidtBöcking,
R. Dörner
Publication year - 2004
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.688
H-Index - 673
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.92.163001
Subject(s) - photoionization , physics , ionization , photon energy , electron , atomic physics , relaxation (psychology) , photon , ion , optics , nuclear physics , quantum mechanics , social psychology , psychology
We report the first kinematically complete study of the four-body fragmentation of the D2 molecule following absorption of a single photon. For equal energy sharing of the two electrons and a photon energy of 75.5 eV, we observed the relaxation of one of the selection rules valid for He photo-double- ionization and a strong dependence of the electron angular distribution on the orientation of the molecular axis. This effect is reproduced by a model in which a pair of photoionization amplitudes is introduced for the light polarization parallel and perpendicular to the molecular axis.
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