Experimental and theoretical studies of laser cooling and emittance control of neutral beams

Experimental and theoretical progress has been made in the stress of experimental observation of the Optial Sten-Gerlach Effect (OSGE), resonant two photon ionization of neutral hydrogen, and a theoretical study of pi-pulse cooling. In the OSGE studies, spatial resolution has been improved, as well as the spatial beam profile monitor, magnetic substrate selection, the size of the interaction region, the signal to noise ratio, and the computer codes for acquiring and analyzing the data. In the resonant two-photon ionization of neutral hydrogen, a neutral hydrogen beam with a density of 10 to the 12th power/cc has been produced and the development of the visible ultraviolet source is progressing.