Magnetic Resonance Frequency Shift of Na Atoms during Collisions in a Mixture of Potassium and Sodium Atoms

被引:1
作者
Kartoshkin, V. A. [1 ]
机构
[1] Ioffe Inst, St Petersburg 194021, Russia
关键词
SPIN-EXCHANGE;
D O I
10.1134/S1063784221090097
中图分类号
O59 [应用物理学];
学科分类号
摘要
Collisions between sodium and potassium atom in the conditions of optical orientation of potassium atoms are considered. Because of collisions, the spin exchange occurs between colliding atoms, which leads to a magnetic resonance frequency shift of Na atoms. Calculations reveal that the magnetic resonance frequency shift of Na atoms in the upper hyperfine state (F = 2) changes its sign from negative to positive upon an increase in the temperature in the absorption chamber from 300 to 500 K and passes through zero near temperature T similar to 450 K, while the frequency shift of the lower hyperfine state (F = 1) remains negative in the entire range of investigated temperatures. An analogous effect is observed for the first time in the case in which the main contribution to the magnetic resonance frequency shift comes from the spin exchange.
引用
收藏
页码:1221 / 1227
页数:7
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