Published September 1, 1997 | Version v1
Journal article Metadata-only

Photon emission from 511 keV gamma rays incident on BaF2 and LaF3:Nd3+ crystals using a cesium iodide photocathode detector

Creators

  • 1. Pennsylvania Univ., Philadelphia (United States). David Ritterhouse Lab.
  • 2. Brookhaven National Laboratory, P.O. Box 5000, Upton, NY 11973-5000 (United States)
  • 3. Fermi National Accelerator Laboratory, Batavia, IL 60510 (United States)

Description

We have studied the possibility of using BaF2 and LaF3 doped with Nd3+, concentrations ranging from 0.1 to 15 mol% as efficient converters of 511 keV gamma rays. We have measured the number of photoelectrons/MeV for both crystals using a parallel-plate avalanche chamber operating with a CsI photocathode. The photocathode is sensitive to wavelengths in the range 160-220 nm. The fast component of the BaF2 emission spectrum has peaks at roughly 175, 195 and 200 nm, and the LaF3:Nd3+ emission spectrum peaks at 173 nm. We measure 3.71±0.04±1.11 photoelectrons/MeV for the BaF2 and 4.81±0.04±1.44 photoelectrons/MeV for the LaF3:Nd3+. The results for BaF2 and LaF3:Nd3+ are consistent with measured scintillation properties of these crystals and CsI photocathode quantum efficiencies. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Journal Volume
396
Journal Issue
1-2
Journal Page Range
p. 172-180.
ISSN
0168-9002
CODEN
NIMAER

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
28076401
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
BARIUM FLUORIDES; DOPED MATERIALS; FAR ULTRAVIOLET RADIATION; GAMMA DETECTION; GAMMA RADIATION; KEV RANGE 100-1000; LANTHANUM FLUORIDES; NEAR ULTRAVIOLET RADIATION; NEODYMIUM IONS; PHOTOCATHODES; PHOTON EMISSION; QUANTUM EFFICIENCY; SCINTILLATIONS; SOLID SCINTILLATION DETECTORS
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CATHODES; CHARGED PARTICLES; DETECTION; EFFICIENCY; ELECTRODES; ELECTROMAGNETIC RADIATION; EMISSION; ENERGY RANGE; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; IONIZING RADIATIONS; IONS; KEV RANGE; LANTHANUM COMPOUNDS; MATERIALS; MEASURING INSTRUMENTS; RADIATION DETECTION; RADIATION DETECTORS; RADIATIONS; RARE EARTH COMPOUNDS; SCINTILLATION COUNTERS; ULTRAVIOLET RADIATION