Variation in k0 neutron flux parameters after replacement of the beryllium reflector and graphite wedge at the University of Missouri Research Reactor



In January 2006 the beryllium reflector and graphite wedge that contained the k0 INAA irradiation position were replaced at the University of Missouri Research Reactor. Prior to replacement the average values of the flux ratio, f, and the epithermal non-ideality factor, α, were 57.4 ± 4.5 and 0.039 ± 0.012. The values of f and α immediately after the beryllium and graphite wedge replacement were 39.4 ± 0.6 and 0.021 ± 0.002. Subsequent measurements indicate that the neutron spectrum hardened with time, possibly due to the buildup of the 6Li atom density to saturation.


Neutron activation analysis k0 NAA Beryllium reflector 


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  • J. D. Brockman
    • 1
  • N. J. Peters
    • 1
    • 2
  • J. D. Robertson
    • 1
    • 2
  1. 1.University of Missouri Research ReactorColumbiaUSA
  2. 2.Department of ChemistryUniversity of MissouriColumbiaUSA

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