Theoretical calculations for precision polarimetry based on Mott scattering

Abstract

Electron polarimeters based on Mott scattering are extensively used in different fields in physics such as atomic, nuclear or particle physics. This is because spin-dependent measurements gives additional information on the physical processes under study. The main quantity that needs to be understood in very much detail, both experimentally and theoretically, is the spin-polarization function, so called analyzing power or Sherman function. A detailed theoretical analysis on all the contributions to the effective interaction potential that are relevant at the typical electron beam energies and angles commonly used in the calibration of the experimental apparatus is presented. The main contribution leading the theoretical error on the Sherman function is found to correspond to radiative corrections that have been qualitatively estimated to be below the 0.5% for the considered kinematical conditions: unpolarized electron beams of few MeV elastically scattered from a gold and silver targets at backward angles.

Accepted version

References in corpus (2)

• Theoretical study of elastic electron scattering off stable and exotic nuclei
• Electron scattering in isotonic chains as a probe of the proton shell structure of unstable nuclei

Cited by in corpus (4)

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• Resonant elastic scattering of polarized electrons on H-like ions