Cyclotron Maser Cooling of Particle Beams and Quantum Field Action Effect on Radiation Cooling

概要

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A new particle bearn cooling sclaerne "cyclotron nuaser cooling" (CIN/IC) was examined. Undera stimtrlating rf field beloxv the critical valtme prescribed by ara action titne of tJae field, a learn ofgyrating electrons obeyed the Liotmville's theorem. However, when the field reached the criticalvalue, the beatn abrtrptly .jvrtaaped to a critical point of the radiative systerau undergoing CINIC,where all electrons accumtnlated at one discrete energy within about 30 ns. On the other harad,when the field exceeded the critical value by less than 1 dB, a colaerent energy modulation tookplace in gyrations. As a possible meclaanism of this rettaarkable phenoznezua, a phase transitionor a macroscopic quanttrrn jump induced by the "quanttrm field action effect" on radiationcooling was presented. Under a stimulating ratiation field below the qtrantuna field action anyoscillator systena renmains non-radiative. However, ttnder tlue stimulating quantum field actioua, anuacroscopic quantum .jump to tlae radiative system takes place leading to its cooling to a stablestate irrespective of photon etnission rnode,
社団法人日本物理学会の論文
1997-08-15