Precision gamma-ray polarimetry applied to studies of bremsstrahlung produced by polarized electrons

Kovtun, Oleksiy

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DOI: 10.11588/heidok.00020470
URN: urn:nbn:de:bsz:16-heidok-204708
URL: http://www.ub.uni-heidelberg.de/archiv/20470

Abstract

The thesis reports on the measurement of bremsstrahlung linear polarization produced in collisions of longitudinally and transversely polarized electrons with gold atoms. The experiment was performed at the Mainzer Microtron MAMI in the Institut für Kernphysik of Johannes Gutenberg-Universität Mainz, Germany. Spin-oriented electrons with 2.15 MeV kinetic energy collided with a thin golden target and produced bremsstrahlung. Linear polarization of the emitted photons was measured by means of Compton polarimetry applied to a segmented high-purity germanium detector. Experimental results reveal a strong correlation between the electron spin orientation and bremsstrahlung linear polarization. This indicates a dominant role of the electron spin in atomic-field bremsstrahlung and Coulomb scattering.

Document type:	Dissertation
Supervisor:	Tashenov, PD Dr. Stanislav
Date of thesis defense:	16 December 2015
Date Deposited:	28 Apr 2016 11:38
Date:	2016
Faculties / Institutes:	The Faculty of Physics and Astronomy > Institute of Physics
DDC-classification:	530 Physics
Controlled Keywords:	Bremsstrahlung, Spin-Bahn-Wechselwirkung, Polarimetrie