A. Andrejczuk et al., A SPECTROMETER FOR COMPTON-SCATTERING STUDIES OF HEAVY-ELEMENTS AND THE PROBLEM OF BREMSSTRAHLUNG BACKGROUND, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 337(1), 1993, pp. 133-144
A high energy Compton spectrometer which operates at either 662 keV or
412 keV with the gamma-ray sources Au-198 and Cs-137, respectively, h
as been designed and built. Measurements conducted on Al, Cu and Ag sa
mples indicate the usefulness of this spectrometer for studies of elec
tron momentum distributions. Systematic discrepancies observed between
the experimental and theoretical Compton profiles of silver are thoug
ht to originate from a background of bremsstrahlung radiation, associa
ted with the Compton recoil electrons and photoelectrons, which is not
significant in studies of lighter elements or with lower energy sourc
es. The problem caused by the presence of the additional background in
the scattering of high energy radiation from heavy elements is discus
sed.