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Proceedings Paper

Determination of low pressure broadening and shift rates for K, Rb, and Cs collisions with rare gases from Anderson Tallman theory
Author(s): Gordon D. Hager; Matthew D. Rotondaro; Glen P. Perram
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Paper Abstract

A mathematical method is described to compute the pressure dependent spectrum of the D1 and D2 lines of atomic cesium in the presence of argon. The method is based on the Anderson Tallman unified theory of pressure broadening in which the spectrum is determined form the Fourier transform of the auto-correlation function. The method uses modified potential energy surfaces of the ground and excited states that correlate to the 2S1/2 ground state and the 2P1/2 and 2P3/2excited states at large inter-nuclear separation. These surfaces are used to form interaction difference potentials to determine the auto-correlation function. In addition to being able to compute pressure dependent spectra that exhibit symmetry and far wing structure the method also allows us to compute the low pressure shift and broadening rates of the Lorentzian line core.

Paper Details

Date Published: 8 November 2012
PDF: 12 pages
Proc. SPIE 8547, High-Power Lasers 2012: Technology and Systems, 85470A (8 November 2012); doi: 10.1117/12.977905
Show Author Affiliations
Gordon D. Hager, Air Force Institute of Technology (United States)
Matthew D. Rotondaro, Air Force Institute of Technology (United States)
Glen P. Perram, Air Force Institute of Technology (United States)

Published in SPIE Proceedings Vol. 8547:
High-Power Lasers 2012: Technology and Systems
Harro Ackermann; Willy L. Bohn, Editor(s)

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