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On the theory of resonance integrals in the statistical region

Published online by Cambridge University Press:  14 July 2016

A. Reichel
Affiliation:
University of Sydney
C. A. Wilkins
Affiliation:
University of Auckland

Abstract

The problem of determining infinitely dilute resonance integrals is formulated in renewal theoretical terms. The mean value of the integral for a single resonance is determined in simple closed form. On the assumption that Wigner's hypothesis holds, the resonance density is determined, and a usable approximation to it is derived. An expression for the infinitely dilute resonance integral in the statistical region is then given and its value calculated in special cases and compared with the results of a previous computation.

Type
Research Papers
Copyright
Copyright © Applied Probability Trust 

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References

[1] Porter, C. E. and Thomas, R. G. (1956) Fluctuations of nuclear reaction widths. Phys. Rev. 104, 483491 CrossRefGoogle Scholar
[2] Kuhn, E. and Dresner, L. (1958) The effect of fluctuations in the reaction widths on iresonance integrals. J. Nuclear Energy 7, 6970.Google Scholar
[3] Reichel, A. (1962) Formulation for the calculation of effective resonance integrals in the statistical region. U. K. Atomic Energy Authority Report. A. E. E. W.-R-118, H. M. S. O. Google Scholar
[4] Dawson, H. G. (1898) On the numerical value of ∫0 h ex 2 dx Proc. Lond. Math. Soc. (1), 29, 519522.Google Scholar
[5] Terrill, H. M. and Sweeney, L. (1944). Table of the integral of ex2 . J. Franklin Institute 237, 495497; 238, 220-221.Google Scholar
[6] Wigner, E. P. (1957) Gatlinberg Conference on Neutron Physics by Time of Flight, Discussion. Oak Ridge National Labs Report 2309, 59.Google Scholar
[7] Mehta, M. L. (1960) On the statistical properties of the level spacings in nuclear spectra. Nuclear Phys. 18, 395419.CrossRefGoogle Scholar
[8] Cox, D. R. (1962) Renewal Theory. Methuen, London.Google Scholar
[9] Hammersley, J. M. (1958) Discussion on Dr. Smith's paper. J. R, Statist. Soc. B 20, 287–229.Google Scholar
[10] Wigner, E. P. (1958) On the distribution of the roots of certain symmetric matrices. Ann. Math. 67, 325327.CrossRefGoogle Scholar
[11] Kahn, P. B. (1963) Energy level spacing distributions. Nuclear Phys. 41, 159166.CrossRefGoogle Scholar
[12] Rosen, J. L., Desjardins, J. S., Rainwater, J. and Havens, W. W. (1960) Slow neutron resonance spectroscopy. I. U238. Phys. Rev. 118, 687697.CrossRefGoogle Scholar
[13] Vernon, A. R. (1960) Resonance integrals of Uranium and Thorium lumps. Nuclear Sci. and Eng. 7, 252262.CrossRefGoogle Scholar