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Multiphoton association reaction He + H + → HeH + steered by ultra‐short laser pulse
Author(s) -
Niu YingYu,
Wang Rong,
Qiu MingHui,
Xiu JunLing
Publication year - 2011
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.22502
Subject(s) - atomic physics , wave packet , photon , chemistry , laser , intermediate state , molecule , ground state , physics , quantum state , quantum , quantum mechanics , organic chemistry
The multiphoton association reaction He + H + → HeH + in the electronic ground state is investigated using the time‐dependent quantum wave packet method. It is shown that the collision pairs He + H + in continuum state transfer into ν = 0 state and then produce stable molecules HeH + through emission of two or three photons. The multiphoton transition takes place via intermediate states, and the transfer probability is determined by the collision energy and the intermediate states. The populations of the intermediate states and ν = 0 state can be controlled by the laser duration. The three‐photon transition is more efficient than the two‐photon transition for producing the molecule HeH + in ν = 0 state. © 2010 Wiley Periodicals, Inc. Int J Quantum Chem, 2011