Efficiency of a bismuth-germanate scintillator: comparison of Monte Carlo calculations with measurements

Conference · Sat Jan 01 04:00:00 EST 1983

DOI:https://doi.org/10.1109/TNS.1984.4333284· OSTI ID:5607610

Hsu, H H; Dowdy, E J; Estes, G P; Lucas, M C; Mack, J M; Moss, C E; Hamm, M E

Monte Carlo calculations of a bismuth-germanate scintillator's efficiency agree closely with experimental measurements. For this comparison, we studied the absolute gamma-ray photopeak efficiency of a scintillator (7.62 cm long by 7.62 cm in diameter) at several gamma-ray energies from 166 to 2615 keV at distances from 0.5 to 152.4 cm. Computer calculations were done in a two-dimensional cylindrical geometry with the Monte Carlo coupled photon-electron code CYLTRAN. For the experiment we measured 11 sources with simple spectra and precisely known strengths. The average deviation between the calculations and the measurements is 3%. Our calculated results also closely agree with recently published calculated results.

• Research Organization: Los Alamos National Lab., NM (USA); Technical Programming Services, Pleasanton, CA (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5607610
• Report Number(s): LA-UR-83-3009; CONF-831015-10; ON: DE84001703
• Country of Publication: United States
• Language: English

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BISMUTH COMPOUNDS
BISMUTH GERMANATES
DATA ANALYSIS
EFFICIENCY
ENERGY RESOLUTION
GERMANATES
GERMANIUM COMPOUNDS
INORGANIC PHOSPHORS
MEASURING INSTRUMENTS
MONTE CARLO METHOD
OXYGEN COMPOUNDS
PHOSPHORS
RADIATION DETECTORS
RESOLUTION
SCINTILLATION COUNTERS
SCINTILLATIONS
SOLID SCINTILLATION DETECTORS