Electron localization in molecular fragmentation of H2 by carrier-envelope phase stabilized laser pulses.
Fully differential data for H2 dissociation in ultrashort (6 fs, 760 nm), linearly polarized, intense (0.44 PW/cm{2}) laser pulses with a stabilized carrier-envelope phase (CEP) were recorded with a reaction microscope. Depending on the CEP, the molecular orientation, and the kinetic energy release (KER), we find asymmetric proton emission at low KERs (0-3 eV), basically predicted by Roudnev and Esry, and much stronger than reported by Kling et al. Wave packet propagation calculations reproduce the salient features and discard, together with the observed KER-independent electron asymmetry, the first ionization step to be the reason for the asymmetric proton emission.
Kremer
Manuel
M
Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany.
Fischer
Bettina
B
Feuerstein
Bernold
B
de Jesus
Vitor L B
VL
Sharma
Vandana
V
Hofrichter
Christian
C
Rudenko
Artem
A
Thumm
Uwe
U
Schröter
Claus Dieter
CD
Moshammer
Robert
R
Ullrich
Joachim
J