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Determination of Neutron Resonance Parameters from Measurements of the Absorption Integral: Application to the Main Resonance of Uranium-238

Nature volume 170, pages 1117–1118 (1952)Cite this article

Abstract

THE resonance absorption of neutrons has been extensively studied by the time-of-flight technique1. If the resolution is insufficient to resolve the true shape of the resonance curve, it is sometimes possible to determine the absorption cross-section σ0 at exact resonance and the width Γ of the Breit–Wigner resonance formula from a study of the variations with absorber thickness of the absorption integral: where σ(E) is the cross-section of the absorbing nuclei and n the number of nuclei/cm.2. Experimentally, the absorption integral is found as the area of the dip in the measured curve of transmission against neutron energy. This area is independent of the resolution.

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References

  1. Jones, jun., W. B., Phys. Rev., 72, 362 (1947). Havens, jun., W. W., and Rainwater, L. J., Phys. Rev., 83, 1123 (1951). Selove, W., Phys. Rev., 84, 869 (1951).

    Article  ADS  CAS  Google Scholar 

  2. Bethe, H. A., Rev. Mod. Phys., 9, 69 (1937).

    Article  ADS  CAS  Google Scholar 

  3. Bennet, W. R., J. Acous. Soc. Amer., 15, 164 (1944).

    Article  ADS  Google Scholar 

  4. Havens, jun., W. W., and Taylor, T. I., Nucleonics, 6, 66 (Feb. 1950).

    Google Scholar 

  5. Hellstrand, E., and Persson, R., Arkiv Fys. (to be published).

  6. “The Chemistry of Uranium” (McGraw-Hill, New York, 1951).

  7. Lamb, W. E., Phys. Rev., 55, 190 (1939).

    Article  ADS  CAS  Google Scholar 

  8. Neutron Cross-Sections, AECU-2040 (May 15, 1952).

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Authors and Affiliations

  1. Department of Physics, AB Atomenergi Stockholm,

    G. V. DARDEL & R. PERSSON

Authors
  1. G. V. DARDEL
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  2. R. PERSSON
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DARDEL, G., PERSSON, R. Determination of Neutron Resonance Parameters from Measurements of the Absorption Integral: Application to the Main Resonance of Uranium-238. Nature 170, 1117–1118 (1952). https://doi.org/10.1038/1701117a0

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  • DOI: https://doi.org/10.1038/1701117a0

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