Segmentation and pulse shape discrimination techniques for rejecting background in germanium detectors

Conference · Wed Feb 01 00:00:00 EST 1984 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:6947036

Roth, J; Lin, R P; Primbsch, J H

The authors examine the possibility of rejecting the internal ..beta..-decay background in coaxial germanium detectors by distinguishing between the multi-site energy losses characteristic of photons and the single-site energy losses of electrons in the range 0.2 - 2 MeV. The photon transport was modeled with a Monte Carlo routine. The authors also investigate background rejection by both multiple segmentation and pulse shape discrimination techniques. The efficiency of a six 1 cm-thick segment coaxial detector operating in coincidence mode alone is compared to that of a two-segment (1 cm and 5 cm) detector employing both front-rear coincidence and PSD in the rear segment to isolate photon events. Both techniques can provide greater than or equal to 95% rejection of single-site events while accepting greater than or equal to 80% of the multi-site events above about 500 keV.

• Research Organization: Space Sciences Lab., Univ. of California, Berkeley, CA 94720
• OSTI ID: 6947036
• Report Number(s): CONF-831015-
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Vol. 31:1; Conference: Nuclear science symposium, San Francisco, CA, USA, 19 Oct 1983
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
GE SEMICONDUCTOR DETECTORS
PULSE DISCRIMINATORS
ANTICOINCIDENCE
BACKGROUND RADIATION
BEAM ACCEPTANCE
BETA DECAY
COINCIDENCE METHODS
COMPARATIVE EVALUATIONS
EFFICIENCY
ELECTRON BEAMS
ENERGY LOSSES
KEV RANGE 100-1000
MEV RANGE 01-10
MONTE CARLO METHOD
PHOTON BEAMS
PHOTON TRANSPORT
PULSE TECHNIQUES
BEAMS
COUNTING TECHNIQUES
DECAY
DISCRIMINATORS
ELECTRONIC CIRCUITS
ENERGY RANGE
KEV RANGE
LEPTON BEAMS
LOSSES
MEASURING INSTRUMENTS
MEV RANGE
NEUTRAL-PARTICLE TRANSPORT
PARTICLE BEAMS
PULSE CIRCUITS
RADIATION DETECTORS
RADIATION TRANSPORT
RADIATIONS
SEMICONDUCTOR DETECTORS
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments