6533b833fe1ef96bd129b631
RESEARCH PRODUCT
Quasi-resonant energy transfer in collisions: Na2(A1? u + )+K(4S)
Sune SvanbergM JansonsJ. KlavinsV. GrushevskyL Caiyansubject
PhysicsDipoleCross section (physics)Resonant inductive couplingExcited stateAtomic physicsPerturbation theoryFluorescenceResonance (particle physics)Atomic and Molecular Physics and OpticsOrder of magnitudedescription
Cross sections for electron energy transfer from the initial rotational stateJ′of the two lowest vibrational levelsv′=0 andv′=1 of excited dimers Na2(A) to potassium atoms as described by Na2(A1Σu+,v′J′)+K(4S)→Na2 (X1Σg+,v″J″)+K(4P)+ΔE have been examined by laser-induced fluorescence. A strong increase of the cross section by as much as an order of magnitude has been observed for those dimerv′J′-levels for which the dipole transitions are close to resonance of the 4S-4P transitions in the atom (ΔE<4 cm−1). The absolute cross sections for energy transfer have been calculated by the Rabitz approximation of first-order perturbation theory. In the case of closest energy resonance (ΔE=0.9 cm−1) the cross section is Q=7.8×10−13 cm2.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1994-03-01 | Zeitschrift f�r Physik D Atoms, Molecules and Clusters |