New method for the determination of accurate gamma-ray intensities for the 14N(n,γ)15N high energy standard

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The 14N(n,γ)15N reaction is a primary source of high energy gamma-rays for use in calibration of detectors for other neutron-capture reactions. The gamma ray-intensities of 15N 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 an intensity balance. A least square 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 15N 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.

Original languageEnglish
Title of host publicationCAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS
Subtitle of host publication12th International Symposium
Pages565-567
Number of pages3
DOIs
Publication statusPublished - Mar 13 2006
Event12th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics - Notre Dame, IN, United States
Duration: Sep 4 2005Sep 9 2005

Publication series

NameAIP Conference Proceedings
Volume819
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other12th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics
CountryUnited States
CityNotre Dame, IN
Period9/4/059/9/05

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Belgya, T. (2006). New method for the determination of accurate gamma-ray intensities for the 14N(n,γ)15N high energy standard. In CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS: 12th International Symposium (pp. 565-567). (AIP Conference Proceedings; Vol. 819). https://doi.org/10.1063/1.2187920