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Neutron Source Strength Estimates From (α, n) Reactions in Binary Mixtures of Actinide Particles and Light Element Particles

[+] Author Affiliations
Jason L. Boles, Ronald S. Hafner, Larry E. Fischer

Lawrence Livermore National Laboratory, Livermore, CA

Paper No. PVP2005-71741, pp. 629-638; 10 pages
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 7: Operations, Applications, and Components
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4192-8 | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME


This paper describes an example of a model used to estimate the neutron source term from (α, n) reactions from a mixture of PuO2 and BeO particles. The (α, n) reaction occurs when an α-particle, emitted by an actinide isotope such as 239 Pu, collides with, and is absorbed by, the nucleus of a light element such as beryllium. Neutrons are produced through the reaction

24α + 49Be → 612C + 01n.   (1)
This reaction is commonly abbreviated as 9 Be(α, n)12 C, or just Be(α, n).

Copyright © 2005 by ASME



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