Study of scattering effects in low-energy gamma-ray spectrometry.
The photon-scattering effect was studied in the low-energy range 15-80keV with planar and coaxial germanium detectors. Different experimental tests have been conducted with a point source, progressively reducing the matter around the radioactive deposit, to investigate the origin and characteristics of the different spectrum components due to scattered photons (bumps). These tests were completed by Monte Carlo simulations. Finally, a peak-shape calibration was performed using several radionuclides ((109)Cd, (241)Am, (133)Ba, (137)Cs and (152)Eu). This allowed in identifying the main contributions to the bumps and improving the spectra processing.
Plagnard
J
J
Laboratoire National Henri Becquerel, CEA Saclay, F-91191 Gif-sur-Yvette Cedex, France. johann.plagnard@cea.fr
Hamon
C
C
Lépy
M C
MC