Flux and Spectral Measurements of Primary and Moderated Neutron Sources

Released on by E. Tochilin
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  • Flux and Spectral Measurements of Primary and Moderated Neutron Sources Book Detail

  • Author : E. Tochilin
  • Release Date : 1962
  • Publisher :
  • Genre : Neutron flux
  • Pages : 38
  • ISBN 13 :
  • File Size : 48,48 MB
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Flux and Spectral Measurements of Primary and Moderated Neutron Sources by E. Tochilin PDF Summary

Book Description: Radioactive (a, n) neutron sources include Ra-Be, PuF4, and four PuBe13 sources. Comparative neutron emission rates were determined by two separate methods: (1) the manganese sulfate bath with appropriate corrections made for fast neutron escape or capture and for thermal neutron capture by the source; and (2) long counter measurements corrected for energy response and so rce anisotropy. Agreement to within 1 percent was obtained by the two independent methods. A Ra-Be source calibrated against the NBS neutron standard was used as a primary reference Spectral measurements of PuBe13 and PuF4 neutron sources were made with nuclear emulsions. By the use of cylindrical plastic and lead absorbers, an effort was made to moderate the PuBe13 spectrum and thereby obtain additional calibration points for instrument response studies. Spectral changes were initially studied with the doublemoderator technique, followed by later measurements with nuclear emulsions. From flux and spectral measurements of the primary and moderated radioactive sources, the first collision tissue dose was calculated and, in turn, compared to experimental measurements of absorbed dose with proportional counters designed according to the Bragg-Gray principle. (Author).

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Elements of Slow-Neutron Scattering

Elements of Slow-Neutron Scattering

File Size : 31,31 MB
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This book provides a comprehensive and up-to-date introduction to the fundamental theory and applications of slow-neutron scattering.