Physics 版 (精华区)
发信人: zjliu (秋天的萝卜), 信区: Physics
标 题: 分子光解离产生自旋极化的氢原子
发信站: 哈工大紫丁香 (Sun Jun 29 10:17:52 2003)
http://intl.sciencemag.org/cgi/content/abstract/300/5627/1936
Spin-Polarized Hydrogen Atoms from Molecular Photodissociation
T. P. Rakitzis,1,3* P. C. Samartzis,2,3 R. L. Toomes,3 T. N. Kitsopoulos,2,3
Alex Brown,4 G. G. Balint-Kurti,5 O. S. Vasyutinskii,6 J. A. Beswick7
The production of spin-polarized hydrogen atoms from the photodissociation
of hydrogen chloride with circularly polarized 193-nanometer light is
inferred from the measurement of the complete angular momentum
distributions of ground state Cl(2P3/2)and excited state
Cl(2P1/2)cofragments by slice imaging. The experimentally measured and ab
initio predicted (p)parameters, which describe the single-surface and
multiple-surface-interference contributions to the angular momentum
distributions, are in excellent agreement. For laser pulses longer than
about 0.7 ns, the polarization of the electron and the proton are both 36%.
1 Department of Physics, University of Crete, Heraklion-Crete, Greece.
2 Department of Chemistry, University of Crete, Heraklion-Crete, Greece.
3 Institute of Electronic Structure and Laser, Foundation for Research and
Technology–Hellas, 71110 Heraklion-Crete, Greece.
4 Department of Chemistry and Cherry L. Emerson Center for Scientific
Computation, Emory University, Atlanta, GA 30322, USA.
5 School of Chemistry, University of Bristol, Bristol BS8 1TS, UK.
6 Ioffe Physico-Technical Institute, Russian Academy of Sciences, 194021
St. Petersburg, Russia.
7 Laboratoire de Collisions, Agrégats de Réactivité, Institut de
Recherche sur les Systèmes Atomiques et Moléculaires Complexes, Université
Paul Sabetier, 31062 Toulouse, France.
Permanent address: Department of Chemistry, University of Alberta,
Edmonton, Alberta, T6G 2G2, Canada.
* To whom correspondence should be addressed. E-mail: ptr@iesl.forth.gr
Volume 300, Number 5627, Issue of 20 Jun 2003, pp. 1936-1938.
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