IONIZATION AND DISSOCIATION OF H2 IN INTENSE LASER FIELDS AT 1.064-MU-M, 532 NM, AND 355-NM

被引:320
作者
ZAVRIYEV, A
BUCKSBAUM, PH
MULLER, HG
SCHUMACHER, DW
机构
[1] COLUMBIA UNIV, DEPT APPL PHYS, NEW YORK, NY 10027 USA
[2] FONDS NATL RECH SCI, INST ATOM & MOLEC PHYS, B-1050 BRUSSELS, BELGIUM
来源
PHYSICAL REVIEW A | 1990年 / 42卷 / 09期
关键词
D O I
10.1103/PhysRevA.42.5500
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present a systematic experimental study of the dissociation and ionization of molecular hydrogen in intense laser fields at three different wavelengths: 1.064m, 532 nm, and 355 nm. The light intensity ranges from 1013 W/cm2 to 1015 W/cm2. Measurements include electron spectra and angular distributions, kinetic-energy spectra and angular distributions of ion fragments, and ion dissociation fractions. We report a number of interesting and novel phenomena, including the following: above-threshold ionization to various vibrational states in the molecular ion, production of very-high-energy electrons from ionization at 1.064m, enhanced dissociation of the H2+ molecular ion via the mechanism of bond softening, above-threshold dissociation, and evidence for the alignment of the molecule in a high-intensity laser field. © 1990 The American Physical Society.
引用
收藏
页码:5500 / 5513
页数:14
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