An exponential two-state model for collisional excitation via a continuum
- 28 August 1988
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 21 (16), 2879-2887
- https://doi.org/10.1088/0953-4075/21/16/013
Abstract
The authors consider a new case of collision-induced transitions between two discrete (quasistationary) states embedded in a continuum. The energy difference ( delta =E1-E2) between the two states is assumed to remain constant throughout the collision whereas the difference between their individual decay widths ( Gamma 1- Gamma 2) and their imaginary couplings (iV1,2) via the continuum have a common exponential dependence: (E1-i Gamma 1/2)-(E2-i Gamma 2/2)= delta -ig exp(- eta R) iV1,2=iF1,2 exp(- eta R). Transition probabilities are determined in closed analytical form for this problem.Keywords
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