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Optics and Spectroscopy

Frequency shifts of the magnetic resonance caused by the spin exchange accompanied by chemoionization in collisions of metastable helium atoms with sodium atoms in the ground state

Victor A. Kartoshkin

Published Aug 1, 1999• 0 citations
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The rate constant for spin exchange in a system consisting of a metastable helium atom and an alkali-metal atom is determined. An experiment on optical orientation of atoms established that the rate constant for spin exchange in a collision of a metastable 2 3 S 1 helium atom with a cesium atom in the 6 2 S 1/2 ground state equals (2.8±0.8)×10 −9 cm 3 s −1 . The rate constant for chemoionization of cesium atoms by metastable helium atoms was determined at the same time to be (1.0±0.3)×10 9 cm 3 s −1 .