| 单词 | optical pumping |
| 释义 | > as lemmasoptical pumping optical pumping n. [after French pompage optique (A. Kastler 1950, in Jrnl. de physique et la radium 11 257/2)] the production of an inversion in the population of certain energy levels in the atoms of a gas by the absorption of optical (visible) resonance radiation of suitable polarization. ΘΚΠ the world > matter > physics > atomic physics > [noun] > particles occupying energy state > transposition of number of optical pumping1952 population inversion1961 inversion1963 the world > matter > physics > electromagnetic radiation > light > polarization > [noun] > producing inversion optical pumping1952 1952 Physical Rev. 85 1051/2 The net result is an optical ‘pumping’ as Kastler suggests, from m = − ½ to m = + ½, or a tendency in the direction of nuclear orientation. This is in competition with a disorienting tendency caused by collisions. 1970 G. K. Woodgate Elem. Atomic Struct. ix. 191 Recently..the methods of optical pumping, double resonance, and level-crossing spectroscopy have begun to provide data on the hyperfine structure of excited states. 1998 Physics News Update (Electronic text) 21 Oct. One of these techniques is ‘spin-exchange optical pumping’, a process in which circularly polarized laser light transfers its spin to rubidium vapor. < as lemmas |
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