A SPECTROMETER FOR COMPTON-SCATTERING STUDIES OF HEAVY-ELEMENTS AND THE PROBLEM OF BREMSSTRAHLUNG BACKGROUND

Authors
ANDREJCZUK A ZUKOWSKI E DOBRZYNSKI L COOPER MJ
Citation
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
Citations number
43
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
337
Issue
1
Year of publication
1993
Pages
133 - 144
Database
ISI
SICI code
0168-9002(1993)337:1<133:ASFCSO>2.0.ZU;2-1
Abstract
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.