Quantal and semiclassical studies of reactions in strong laser fields: F(/sup 2/P/sub 3/2/, /sup 2/P/sub 1/2/)+H/sub 2/+h. omega. (0. 117, 0. 469, 1. 17 eV)
The effects of three photons, namely the CO/sub 2/ photon (h..nu.. = 0.117 eV), the HF photon (h..nu.. = 0.469 eV), and the Nd:glass photon (h..nu.. = 1.17 eV), on the reactive (F(/sup 2/P/sub 3/2/), F(/sup 2/P/sub 1/2/))+H/sub 2/ systems were studied. Results due to exact quantal, approximate quantal (curve crossing model), and semiclassical (trajectory surface hopping model) treatments are presented for the collinear arrangement. It was found that the existence of field intensities of 0.1--2.5 TW/cm/sup 2/ hardly affect the reactive process for the system F(/sup 2/P/sub 3/2/)+H/sub 2/. In the interaction of F(/sup 2/P/sub 1/2/) and H/sub 2/ which is, for all practical purposes, elastic in the field-free case, the field-induced electronic inelastic (the spin conversion process) and electronic reactive transition probabilities are not large. For an intensity of 0.1 TW the largest probability encountered is 20%. In comparing the quantal and the semiclassical treatments, it was found that except for one case where a quantitative fit was obtained in all (five) other cases the agreement is at most qualitative. In general, the semiclassical results are lower than the quantal ones.
- Research Organization:
- Applied Mathematics, Soreq Nuclear Research Center, Yavne 70600, Israel
- OSTI ID:
- 5692471
- Journal Information:
- J. Chem. Phys.; (United States), Vol. 82:11
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FLUORINE
ATOM-MOLECULE COLLISIONS
HYDROGEN
CHEMICAL REACTIONS
ELECTROMAGNETIC FIELDS
LASER RADIATION
QUANTUM MECHANICS
SEMICLASSICAL APPROXIMATION
ATOM COLLISIONS
COLLISIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
HALOGENS
MECHANICS
MOLECULE COLLISIONS
NONMETALS
RADIATIONS
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena