Collisions of Atoms in Microwave and Laser Fields
In order to Bose condense spin-polarized atomic hydrogen, a few types of traps have been proposed to isolate the atoms from the walls where recombination takes place. Recently, Agosta and Silvera  proposed a microwave trap operating on the b-c electron spin-flip transition at ~ 5 tesla. They made a preliminary calculation of the collisional relaxation loss of atoms in such a trap using dressed atom states. In this contribution the relaxation rates are worked out more completely. Although we mention only the microwave trap explicitly, our theoretical techniques apply also to laser traps.