1. Theory of laser enhancement and suppression of cold reactions: The fermion-boson 6Li+7Li2↔hω06Li7Li+7Li radiative collision.
- Author
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Xuan Li, Parker, Gregory A., Brumer, Paul, Thanopulos, Ioannis, and Shapiro, Moshe
- Subjects
WAVE packets ,PARTICLES (Nuclear physics) ,CHEMICAL reactions ,RADIATIVE transitions ,ENERGY transfer ,ENERGY levels (Quantum mechanics) - Abstract
We present a nonperturbative time-dependent quantum mechanical theory of the laser catalysis and control of a bifurcating A+BC↔
hω ABC0 * (v)↔hω AB+C reaction, with ABC0 * (v) denoting an intermediate, electronically excited, complex of ABC in the vth vibrational state. We apply this theory to the low collision energy fermion-boson light-induced exchange reaction,6 Li(2 S)+7 Li2 (3 Σu + )↔hω (0 6 Li7 Li7 Li)* ↔hω 0 6 Li7 Li(3 Σ+ )+7 Li(2 S). We show that at very low collision energies and energetically narrow (∼0.01 cm-1 ) initial reactant wave packets, it is possible to tune the yield of the exchange reaction from 0 to near-unity (yield >=99%) values. Controllability is somewhat reduced at collisions involving energetically wider (∼1 cm-1 ) initial reactant wave packets. At these energetic bandwidths, the radiative reactive control, although still impressive, is limited to the 0%–76% reactive-probabilities range. [ABSTRACT FROM AUTHOR]- Published
- 2008
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