At the investigation of spin-exchange collisions between optically oriented cesium atoms and nitrogen atoms Cs(arrow up) + N(arrow down)<=>Cs(arrow down) + N(arrow up), where the arrows denote the electron spin the very slow ((approx)sec) recovery of the cesium atoms spin orientation was observed when the gas discharge has been switched off. Such behaviour of cesium orientation can be explained by the existence of two processes which take place simultaneously: the brief increasing of the N-atom concentration in the initial moment of the afterglow in the spherical part of the chamber and the decay of the N-atom concentration as a result of the three particle recombination process. At the recombination process the spin-polarization can be transmitted to the molecular particles.
展开▼
