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Coherence transfer between the $sup 2$P/sub 1/2/ and $sup 2$P/sub 3/2/ states in potassium, induced in collisions with noble gas atoms and with molecules

B. Niewitecka, L. Krause

Published Feb 15, 1973• 0 citations
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Coherence Transfer between the 2P1/2 and 2P3/2 States in Potassium, Induced in Collisions with Noble Gas Atoms and with Molecules

B. Niewitecka, L. Krause

The transfer of coherence accompanying 42P1/2 → 42P3/2 transfer of excitation induced in collisions between 42P1/2 potassium atoms and noble gas atoms as well as some simple molecules, was studied in a series of sensitized fluorescence experiments. Mixtures of potassium vapor at 6 × 10−7 Torr with the various buffer gases were irradiated with circularly polarized D1(σ+) light and the relative intensities of the σ+ and σ− fractions of both the D1 and D2 fluorescent components were determined in relation to the pressures of the buffer gases. The experiments yielded the following cross sections for coherence transfer: K–He:1.7 Å2; K–Ne :0.8 Å2; K–Ar < 0.5 Å2; K–H2 :3.5 Å2; K–CH4 :7.0 Å2; K–CD4:7.7 Å2.

Canadian Journal of Physics•Feb 15, 1973•6 citations
Coherence transfer between the sup2sup 2sup2P/sub 1/2/ and sup2sup 2sup2P/sub 3/2/ states in potassium, induced in collisions with noble gas atoms and with molecules
Coherence transfer between the 3sup2sup 2sup2P/sub 1/2/ and 3sup2sup 2sup2P/sub 3/2/ states in sodium, induced in collisions with noble gas atoms
Broadening of level-crossing signals in 5sup2sup 2sup2P/sub 3/2/ state of sup87sup 87sup87Rb and sup85sup 85sup85Rb by collisions with noble-gas atoms
The transfer of coherence accompanying 42P1/2 → 42P3/2 transfer of excitation induced in collisions between 42P1/2 potassium atoms and noble gas atoms as well as some simple molecules, was studied in a series of sensitized fluorescence experiments. Mixtures of potassium vapor at 6 × 10−7 Torr with the various buffer gases were irradiated with circularly polarized D1(σ+) light and the relative intensities of the σ+ and σ− fractions of both the D1 and D2 fluorescent components were determined in relation to the pressures of the buffer gases. The experiments yielded the following cross sections for coherence transfer: K–He:1.7 Å2; K–Ne :0.8 Å2; K–Ar < 0.5 Å2; K–H2 :3.5 Å2; K–CH4 :7.0 Å2; K–CD4:7.7 Å2.