Measuring fast-neutron flux by radioactivation of aluminum

Journal Article · Wed Dec 31 23:00:00 EST 1980 · Annu. Book ASTM Stand.; (United States)

OSTI ID:5483293

The method describes procedures for determining neutron flux density by the activation reaction /sup 27/Al(n,..cap alpha..)/sup 24/Na. The activation reaction has a threshold of about 6 MeV (0.96 pJ) and is most useful for irradiation times up to about 2 days (0.17 Ms). With suitable techniques, fission-neutron flux densities above 10/sup 7/.cm/sup -2/ . s/sup -1/ (0.1/..mu..m/sup 2/ . s) can be measured. The method includes a discussion of significance, definitions, apparatus, materials, procedure, calculations, reporting, precision, and accuracy. (JMT)

• OSTI ID: 5483293
• Journal Information: Annu. Book ASTM Stand.; (United States), Journal Name: Annu. Book ASTM Stand.; (United States) Vol. 45; ISSN ABASC
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101* -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
ACCURACY
ALKALI METAL ISOTOPES
ALUMINIUM 27
ALUMINIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCULATION METHODS
ENERGY
INDUSTRY
IRRADIATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
MEASURING METHODS
NEUTRON FLUX
NUCLEAR INDUSTRY
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIATION FLUX
RADIOACTIVATION
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SODIUM 24
SODIUM ISOTOPES
STABLE ISOTOPES
STANDARDS
THRESHOLD ENERGY