High-efficiency scintillation detector for thermal and high-energy neutrons and gamma radiation

Subcriticality experiments require high-efficiency radiation detectors that are sensitive to neutrons (thermal and fast) over a wide energy range and to gamma radiation. A scintillation detector design that meets these criteria is described. It consists of two scintillators assembled on a single pho...

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Veröffentlicht in:	IEEE Transactions on Nuclear Science 1988-02, Vol.35 (1), p.110-111
Hauptverfasser:	Chiles, M., Mihalczo, J., Blakeman, E.D.
Format:	Artikel
Sprache:	eng
Schlagworte:	220900 - Nuclear Reactor Technology- Reactor Safety 440101 - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments ALKALI METAL ISOTOPES Assembly BARYONS DESIGN DETECTION EFFICIENCY ELECTROMAGNETIC RADIATION ELEMENTARY PARTICLES FAST NEUTRONS FERMIONS GAMMA DETECTION GAMMA RADIATION Gamma rays GENERAL STUDIES OF NUCLEAR REACTORS GLASS HADRONS INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY IONIZING RADIATIONS ISOTOPES LIGHT NUCLEI Lithium LITHIUM 6 LITHIUM ISOTOPES MATERIALS MEASURING INSTRUMENTS NEUTRON DETECTION NEUTRON DETECTORS NEUTRONS Nuclear Criticality Safety Program (NCSP) NUCLEI NUCLEONS ODD-ODD NUCLEI PETROCHEMICALS PETROLEUM PRODUCTS PHOTOMULTIPLIERS PHOTOTUBES Plastic PLASTICS RADIATION DETECTION RADIATION DETECTORS RADIATIONS REACTOR MONITORING SYSTEMS REACTOR SAFETY SAFETY SCINTILLATION COUNTERS Scintillation Detector Design Single Detector SOLID SCINTILLATION DETECTORS STABLE ISOTOPES SUBCRITICALITY Subcriticality Experiments SYNTHETIC MATERIALS THERMAL NEUTRONS
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Beschreibung
Zusammenfassung:	Subcriticality experiments require high-efficiency radiation detectors that are sensitive to neutrons (thermal and fast) over a wide energy range and to gamma radiation. A scintillation detector design that meets these criteria is described. It consists of two scintillators assembled on a single photomultiplier tube. One scintillator is a glass, loaded with lithium enriched in /sup 6/Li, and has high efficiency for low-energy neutrons. The second scintillator is a plastic having very good efficiency for higher-energy neutrons. Efficiency values are reported for various neutron energy ranges and for gamma radiation.< >
ISSN:	0018-9499 1558-1578
DOI:	10.1109/23.12685