THE ESTABLISHMENT OF AN ABSOLUTELY CALIBRATED NEUTRON SOURCE
Journal Article
·
· J. Nuclear Energy, Pts. A and B. Reactor Sci. and Technol.
A 400 mc Ra-- Be photoneutron source was adopted as the national standard source. It was calibrated by the method of absolute determination of Mn/ sup 56/ produced in the Mn/sup 55/(n, gamma )Mn/sup 56/ reaction. The calibration agrees within 1% with an international average. The standard error is plus or minus 1%. The error is mainly due to the uncertainty in the knowledge of the manganese and hydrogen thermal neutron capture cross sections. In addition there may be a systematic error not exceeding 1.0% associated with 4 pi beta proportional counting. (auth)
- Research Organization:
- National Physical Lab., Teddington, Middx., Eng.
- NSA Number:
- NSA-15-031622
- OSTI ID:
- 4833079
- Journal Information:
- J. Nuclear Energy, Pts. A and B. Reactor Sci. and Technol., Journal Name: J. Nuclear Energy, Pts. A and B. Reactor Sci. and Technol. Vol. Vol: 15
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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