Prompt-gamma activation analysis

Journal Article · · Journal of Research of the National Institute of Standards and Technology; (United States)

DOI:https://doi.org/10.6028/jres.098.009· OSTI ID:5718164

Lindstrom, R M ^[1]

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1. National Inst. of Standards and Technology, Gaithersburg, MD (United States)

A permanent, full-time instrument for prompt-gamma activation analysis is nearing completion as part of the Cold Neutron Research Facility (CNRF). The design of the analytical system has been optimized for high gamma detection efficiency and low background, particularly for hydrogen. Because of the purity of the neutron beam, shielding requirements are modest and the scatter-capture background is low. As a result of a compact sample-detector geometry, the sensitivity (counting rate per gram of analyte) is a factor of four better than the existing Maryland-NIST thermal-neutron instrument at this reactor. Hydrogen backgrounds of a few micrograms have already been achieved, which promises to be of value in numerous applications where quantitative nondestructive analysis of small quantities of hydrogen in materials is necessary.

• OSTI ID: 5718164
• Journal Information: Journal of Research of the National Institute of Standards and Technology; (United States), Journal Name: Journal of Research of the National Institute of Standards and Technology; (United States) Vol. 98:1; ISSN 1044-677X; ISSN JRITEF
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
220600 -- Nuclear Reactor Technology-- Research
Test & Experimental Reactors
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101* -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
440101 -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BARYONS
CHEMICAL ANALYSIS
COLD NEUTRONS
DETECTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
GAMMA DETECTION
GAMMA RADIATION
HADRONS
HEAVY WATER COOLED REACTORS
HEAVY WATER MODERATED REACTORS
HYDROGEN
IONIZING RADIATIONS
IRRADIATION REACTORS
MATERIALS TESTING REACTORS
MEASURING INSTRUMENTS
NBSR REACTOR
NEUTRONS
NONDESTRUCTIVE ANALYSIS
NONMETALS
NUCLEAR REACTION ANALYSIS
NUCLEAR REACTION ANALYZERS
NUCLEONS
PROMPT GAMMA RADIATION
RADIATION DETECTION
RADIATION DETECTORS
RADIATIONS
REACTORS
RESEARCH AND TEST REACTORS
RESEARCH REACTORS
TANK TYPE REACTORS
THERMAL REACTORS