Improved accuracy of {gamma}-ray intensities from basic principles for the calibration reaction {sup 14}N(n,{gamma}){sup 15}N
- Institute of Isotopes Hungarian Academy of Sciences, POB 77, H-1525 Budapest (Hungary)
The {sup 14}N(n,{gamma}){sup 15}N reaction is a primary source of high-energy {gamma} rays for use in the calibration of detectors for other neutron-capture reactions. The {gamma}-ray intensities of {sup 15}N produced by thermal neutron capture and the {gamma}-ray detection efficiency function have been simultaneously determined from {gamma}-peak areas alone using the basic principle of intensity balance. A least-squares fit was made to a new type of intensity balance calculation, combined with traditional efficiency fitting of radioactive sources. This latter ensures the compatibility with low-energy efficiencies, while providing an unbiased efficiency function for higher (up to 10 MeV) {gamma}-ray energies. The calculation is based on the assumption that the {sup 15}N decay scheme is complete. From the internal consistency of the resulting intensities, it is believed that they are more accurate than previously published values. The same is true for the derived efficiency function.
- OSTI ID:
- 20863726
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 74, Issue 2; Other Information: DOI: 10.1103/PhysRevC.74.024603; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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