Numbers of scintillation photons produced in NaI(Tl) and plastic scintillator by gamma rays

Conference · Sun Aug 01 04:00:00 EDT 1993 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5924712

Miyajima, M; Sasaki, S; Tawara, H ^[1]

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1. National Lab. for High Energy Physics, Tsukuba (Japan)

The W[sub s]-value, which is defined as an average energy expended per scintillation photon, was determined to be 17.2 [+-] 0.40 eV for a NaI(Tl) phosphor and 60.8 [+-] 4.3 eV for a plastic scintillator (NE-102A). Those were obtained from the numbers of photoelectrons measured with several combinations of a photomultiplier tube and a NaI(Tl) or a NE-102A scintillator. The number of photoelectrons, which was measured by the photomultiplier tube as a vacuum photodiode, was converted to the number of scintillation photons by using an averaged quantum efficiency (Q[sub e]) of each photomultiplier photocathode and a calculated collection efficiency (f[sub c]) of the scintillation photons at the photocathode. However, the above values do not include the uncertainties due to the not known exact emission spectra and the photomultiplier response curves.

• OSTI ID: 5924712
• Report Number(s): CONF-921005--
• Conference Information: Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 40:4 part 1
• 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
DATA
EFFICIENCY
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
EXPERIMENTAL DATA
GAMMA RADIATION
INFORMATION
IONIZING RADIATIONS
MEASURING INSTRUMENTS
NAI DETECTORS
NUMERICAL DATA
PERFORMANCE
PHOTOMULTIPLIERS
PHOTOTUBES
PLASTIC SCINTILLATION DETECTORS
QUANTUM EFFICIENCY
RADIATION DETECTORS
RADIATIONS
SCINTILLATION COUNTERS
SOLID SCINTILLATION DETECTORS
SPECTRA