Nonradiative DKR processes: revisiting the theory. III. Multimode approaches

Details Nonradiative DKR processes: revisiting the theory. III. Multimode approaches Nonradiative DKR processes: revisiting the theory. III. Multimode approaches

2007-05-29

arxiv.org/abs/0705.4293v1

Physics

Condensed Matter

Materials Science

16 pages including 3(5) tables, 2 appendices, and 4(5) figures, all pdf format

Scientific paper

We outline a method for dealing with the relaxation of optically excited NaI F centers in terms of a single effective frequency along a multimode coordinate. The 2s-2p mixing through coupling to a T_{1u} vibrational mode is also discussed with optimistic conclusions. Equilibrium nonradiative deexcitation rates are estimated and compared with intervibrational relaxations so as to assess the efficiency of the nonequilibrium DKR deexcitation. They show the former not to be competitive, due to the large number of phonons exchanged.

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