ABOVE-THRESHOLD DISSOCIATION OF H-2+ IN INTENSE LASER FIELDS

被引:315
作者
GIUSTISUZOR, A
HE, X
ATABEK, O
MIES, FH
机构
[1] NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899
[2] LAB CHIM PHYS PARIS,F-75231 PARIS,FRANCE
关键词
D O I
10.1103/PhysRevLett.64.515
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present nonperturbative, time-independent calculations of the photodissociation rate of H2+ in intense laser fields. The energy distribution of the protons consists in a sequence of peaks evenly spaced by half the photon energy, all of equal width but of varying heights. They result from multiphoton absorption above the dissociation threshold, with equal sharing of the excess photon energy between H and H+. Surprisingly, the distribution of higher-energy peaks decreases with increasing intensity, due to stimulated free-free emission of the dissociating fragments. We also predict a sharp angular distribution of the protons along the electric field vector of a linearly polarized laser. © 1990 The American Physical Society.
引用
收藏
页码:515 / 518
页数:4
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