Accession Number : AD0673841

Title :   SPIN-RELATED POLARIZATION EFFECT IN COMPTON SCATTERING OF RELATIVISTIC ELECTRONS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Lu Ching-Fa,

Report Date : 03 NOV 1967

Pagination or Media Count : 9

Abstract : In the production of high energy photons from Compton scattering of particles by relativistic electrons, the inclusion of particle spin may significantly increase the scattering cross section and the degree of polarization. This paper studies the effect of various possible spin states on Compton scattering by relativistic electrons. The equation of differential cross section can be written according to the transition probability of particles. In the case of charged particles with longitudinal spin (spin parallel to direction of motion), an equation of energy distribution for secondary photons is derived. Calculation shows that the scattering cross section for the production of polarized high energy photons may be twice as large for particles with directional spin as for spinless particles. In the case of charged particles with transverse spin (spin perpendicular to direction of motion), the higher order approximations disappear in the relativistic case. Using a final state summation procedure, the scattering cross section equation for transverse spin charged particles can be easily reduced to the common Klein-Nishina formula for stationary electrons. Effected by the transverse spin, the scattered photons become partially or completely polarized despite the non-polarization of the primary photons. (Author)

Descriptors :   (*COMPTON SCATTERING, POLARIZATION), ELECTRONS, SCATTERING, PHOTONS, NUCLEAR CROSS SECTIONS, NUCLEAR SPINS, GAMMA RAY SCATTERING, CHINA

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE