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Stochastic Aspects of Neutron Multiplication in Fusion Blanket Materials and Spallation Targets

  • S. B. Degweker
  • Amar Sinha
  • M. Srinivasan

Abstract

A Stochastic description of neutron multiplication in fusion blanket materials and spallation targets is presented. An asymptotic solution of the multigroup Kolmogorov equation for a point model is obtained. The solution gives the multiplicity spectrum (MS) of leakage neutrons and its factorial moments as well as the neutron multiplicity equation of Kumar and Srinivasan. The MS (or its factorial moments) are measurable and can yield valuable information regarding the individual nuclear processes such as (n, 2n) reactions. The paper also discusses the use of stochastic transport theory for calculation of the MS. Results of calculations using the two methods for Be-9, a promising candidate for fusion blankets are discussed.

Keywords

Point Model Neutron Multiplication Kolmogorov Equation Factorial Moment Secondary Neutron 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Williams M. M. R., Random Processes in Nuclear Reactors, Pergammon Press (1974)Google Scholar
  2. 2.
    Bondar L., Proc. Int. Mtg. Monitoring Pu Contaminated Wastes, Ispra, Italy 25–28 Sept(1979)Google Scholar
  3. 3.
    Bondar L., Proc. Int. Conf. Nucl. Safeguards, Vienna,~ IAEA-SM-260/54 p137(1980)Google Scholar
  4. 4.
    Bohnel K. Nucl. Sic Engng. 90, 75(1985)Google Scholar
  5. 5.
    Srinivasan M. (1985), Feasibility of the Application of Staustical Correlation Technique for Experimental Study of Multiplication of 14 MeV Neutrons in Be Assemblies, Ann.Nucl.Energy, 12, no.3, ppl25–135CrossRefGoogle Scholar
  6. 6.
    Kumar A. and Srinivasan M.(1984), Neutron Multiplicity Equation and its Application for (n, 2n) Multiplication Measurements by Statistical Correlation Technique; Submitted for publication to Nucl.Sci.Eng.Google Scholar
  7. 7.
    Sinha A. Degweker S. B. and Srinivasan M. Neutron multiplication in Be-9; A Stochastic Approach Ann.Nucl. Energy 14, 447(1987)CrossRefGoogle Scholar
  8. 8.
    Sinha A. Garg S. B. and Srinivasan M. Sensitivity Studies of the Neutron Multiplicity Spectrum in the Spallation of Lead Targets Ann. Nucl. Energy 13, 579 (1986)CrossRefGoogle Scholar
  9. 9.
    Bell G.I. Stochastic Neutron Transport Theory Nucl. Sci. Engng. 21,390 (1965)Google Scholar
  10. 10.
    Garg S. B. and Sinha A., BARC-35 A 35 Group Cross-Section Library With P3 Anisotropic Scattering Matrices and Resonance Self-Shielding Factors, Report BARC-1222(1984)Google Scholar
  11. 11.
    Huanquiao Z. et al, The Average Number of Prompt Neutrons and the Distributions of Prompt Neutron Emission Number for Spontaneous Fission of Plutonium-240 Curium-242 and Curium-244, Nucl.Sci. and Engg.86,315(1984Google Scholar

Copyright information

© Plenum Press, New York 1989

Authors and Affiliations

  • S. B. Degweker
    • 1
  • Amar Sinha
    • 2
  • M. Srinivasan
    • 2
  1. 1.Reactor Analysis and Systems DivisionBhabha Atomic Research CentreTrombayIndia
  2. 2.Neutron Physics DivisionBhabha Atomic Research CentreTrombayIndia

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