Coherent transients as an effective technique to distinguish different collisional relaxational channels.

Details Coherent transients as an effective technique to distinguish different collisional relaxational channels. Coherent transients as an effective technique to distinguish different collisional relaxational channels.

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..467..317r&link_type=abstract

The 14th international conference on spectral line shapes. AIP Conference Proceedings, Volume 467, pp. 317-320 (1999).

Computer Science

Optical Transient Phenomena: Quantum Beats, Photon Echo, Free-Induction Decay, Dephasings And Revivals, Optical Nutation, And Self-Induced Transparency, Line And Band Widths, Shapes, And Shifts

Scientific paper

Precise knowledge of collisional relaxation channels is in close relation with the research of both specific features of interaction potential and details of lineshape. When using nonlinear laser technique of spectral domain, it's not so easy to distinguish between different channels of relaxation because of their integral contribution to the lineshape of rarefied gas. This report intends to demonstrate ability of coherent transient phenomena to overcome this difficulty. Comparative study of several photon echo modifications, performed in molecular gas SF6 has permitted to choose definite type of coherent transient phenomena, which is the most sensitive to peculiar channel of collisional relaxation. The data on relaxation rates of rotationally inelastic, elastic small angle scattering and depolarizing collisions in SF6 and its mixtures with buffer gases are examined.

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