The Soviet Journal of Atomic Energy

, Volume 9, Issue 2, pp 630–636 | Cite as

Determination of energy absorption in a mixed flux of fast neutrons and γ-rays by an ionization method

  • Yu. I. Bregadze
  • B. M. Isaev
  • V. A. Kvasov


The possibility of separate determinations of the energy absorption of fast neutrons and γ -rays in the mixed radiation flux from a reactor has been studied with ioni/ation chambers. Three chambers with different hydrogenous fillers were used: polyethylene with an ethylene filler; graphite with a CO2 filler and a chamber made from aerion, a conducting plastic, which was filled with a mixture of ethylene and CO2. Calculations have been carried out to ascertain the sensitivity of these chambers to neutrons with energies ranging from 0.2–8 Mev. Variation of the neutron spectrum over wide limits has no effect on the accuracy in the determination of the absorbed dose in the hydrogenous substrates. A calculation shows that the error in the determination of the absorbed energy for fast neutrons is approximately 15% and is a weak function of the relative doses of neutrons and γ -rays.


Ethylene Graphite Polyethylene Energy Absorption Radiation Flux 
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Copyright information

© Consultants Bureau Enterprises, Inc. 1961

Authors and Affiliations

  • Yu. I. Bregadze
  • B. M. Isaev
  • V. A. Kvasov

There are no affiliations available

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