Standard method for measuring fast-neutron flux by radioactivation of aluminum

Journal Article · Wed Jan 01 04:00:00 EST 1975 · Annu. Book ASTM Stand.; (United States)

OSTI ID:7342919

The threshold reaction /sup 27/Al(n,..cap alpha..)/sup 24/Na was used to measure fast-neutron fluxes. After removal from the neutron field, the sample was allowed to age for 1 to 2h to allow the /sup 28/Al and /sup 27/Mg to decay. The 2.754 MeV ..gamma.. ray of /sup 24/Na was then counted with a ..gamma.. spectrometer. With suitable techniques, fission neutron fluxes in the approximate range from 10/sup 7/ to 10/sup 15/ neutrons/cm/sup 2/.s were measured. (BLM)

• OSTI ID: 7342919
• Journal Information: Annu. Book ASTM Stand.; (United States), Journal Name: Annu. Book ASTM Stand.; (United States) Vol. 45; ISSN ASTSA
• 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
ACTIVATION DETECTORS
ALKALI METAL ISOTOPES
ALUMINIUM
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL ANALYSIS
DATA ANALYSIS
ELEMENTARY PARTICLES
ELEMENTS
FAST NEUTRONS
FERMIONS
HADRONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
MEASURING INSTRUMENTS
METALS
NEUTRON DETECTION
NEUTRON DETECTORS
NEUTRON FLUX
NEUTRONS
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
QUANTITATIVE CHEMICAL ANALYSIS
RADIATION DETECTION
RADIATION DETECTORS
RADIATION FLUX
RADIOACTIVATION
RADIOISOTOPES
RADIOMETRIC ANALYSIS
SECONDS LIVING RADIOISOTOPES
SODIUM 24
SODIUM ISOTOPES
STANDARDS