Publikationsdatum:
2019-07-13
Beschreibung:
A pulse-shape discrimination (PSD) technique is developed to reject the beta-decay background resulting from activation of Ge gamma-ray detectors by cosmic-ray secondaries. These beta decays are a major source of background at 0.2-2 MeV energies in well shielded Ge detector systems. The technique exploits the difference between the detected current pulse shapes of single- and multiple-site energy depositions within the detector: beta decays are primarily single-site events, while photons at these energies typically Compton scatter before being photoelectrically absorbed to produce multiple-site events. Depending upon the amount of background due to sources other than beta decay, PSD can more than double the detector sensitivity.
Schlagwort(e):
INSTRUMENTATION AND PHOTOGRAPHY
Materialart:
EUV, X-ray, and Gamma-Ray Instrumentation for Astronomy and Atomic Physics; Aug 07, 1989 - Aug 11, 1989; San Diego, CA; United States
Format:
text
