Metastable Quasimolecules in Excited Gases

Details Metastable Quasimolecules in Excited Gases Metastable Quasimolecules in Excited Gases

2008-09-09

arxiv.org/abs/0809.1466v1

Ukrainian Journal of Physics, 50 N4 (2005) 333--339

Physics

Quantum Physics

6 pages, no figures, 1 table

Scientific paper

Quasimolecules, which consist of two differently excited atoms in a resonantly excited gas, are considered. The energy of dissociation and typical sizes of such molecules are calculated in the first order of quantum-mechanical perturbation theory with the help of the dipole-dipole interaction operator. It is shown that there exist metastable quasimolecules, whose dipole radiative transition to the ground state (two non-excited atoms) is forbidden. The lifetime of such molecules is estimated and it is shown that quasimolecules may considerably affect the transport processes in a resonantly excited gas.

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