SYNCHROTRON-RADIATION AND SPIN LIGHT

Spin light, or mu-radiation, is a new phenomenon of nature, which obse rvation has become possible due to development of technology of the el ementary particles acceleration. In this work the description of the N ovosibirsk experiment, where the spin dependence of synchrotron radiat ion was observed for the first time, is given. It is shown, that the s pin light is decomposed to different on principle mu L- and mu Th-radi ation types. mu L-radiation is conditioned by Larmor precision of the intrinsic magnetic moment of the electron (and its anomalous part), wh ile mu Th-radiation is connected with Thomas precession of the electro n spin and has pure kinematic origin. In the relativistic quantum theo ry of radiation based on the Dirac equation, mu L-radiation and mu Th- radiation do not differ one from another and from the other quantum ef fects of electron radiation. Separate consideration is possible only i n Jackson's relativistic semiclassical radiation theory used in the gi ven work.