Advertisement

Measurement of the Thermal Neutron Cross Section and Resonance Integral of the Reaction 137Cs(n,γ)138Cs

  • T. Sekine
  • Y. Hatsukawa
  • K. Kobayashi
  • H. Harada
  • H. Watanabe
  • T. Katoh
Conference paper
Part of the Research Reports in Physics book series (RESREPORTS)

Abstract

The reactor-neutron cross section of the reaction 137Cs(n,γ)138Cs has been measured by means of a radiochemical method. First, the thermal neutron cross section, including a contribution of epithermal neutrons, was determined and found to be twice as large as that of the previous work by D.C. Stupegia. Second, a modified Cd-ratio experiment was carried out, using a movable cadimium shield in a reactor. The thermal neutron cross section (for 2200 m·s−1 neutrons) was 0.25±0.02 band the resonance integral 0.36±0.07 b. In the analysis of the experimental results, a possibility of the production of the 138Cs isomer (T 1/2=2.9 min) was disregarded. The model calculation for the isomeric yield ratio in s-wave neutron capture of 137Cs showed that the cross-section values obtained have a probable error of +1.2% or +3.9%.

Keywords

neutron capture cesium 137 cesium 138 cross sections isomeric yield ratio thermal neutron resonance integral nuclear transmutation chemical separation gamma-ray spectra 

References

  1. 1.
    D.C. Stupegia: J. Nucl. Energy, A12, 16 (1960)Google Scholar
  2. 2.
    H. Harada, H, Watanabe, T. Sekine, Y. Hatsukawa, K. Kobayashi, T. Katoh: J. Nucl. Sci. Tech., 27, 577 (1990)Google Scholar
  3. 3.
    J.R. Huizenga and R.V. Vandenbosch: Phys. Rev., 120, 1305 (1960)Google Scholar
  4. 4.
    T.R. England, W.B. Wilson, R.E. Scheuter and F.M. Mann: NP-2345 (1984)Google Scholar
  5. 5.
    M. Kawai, T. Watanabe, T. Nakagawa, S. Iijima, H. Matsunobu, T. Nishigori, M. Sasaki, T. Sugi, and A. Zukeran: Proc. Int. Conf. on Nucl. Data for Science and Technology, May 30, 1988, Mito, Japan, p.569Google Scholar
  6. 6.
    T. Nakagawa: private communicationGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • T. Sekine
    • 1
  • Y. Hatsukawa
    • 1
  • K. Kobayashi
    • 1
  • H. Harada
    • 2
  • H. Watanabe
    • 2
  • T. Katoh
    • 3
  1. 1.Japan Atomic Energy Research InstituteTokai-mura, Ibaraki-kenJapan
  2. 2.Nuclear Fuel Technology Development DivisionPower Reactor and Nuclear Fuel Development Corp.Tokai-mura, Ibaraki-kenJapan
  3. 3.Department of Nuclear EngineeringNagoya UniversityChikusa-ku, NagoyaJapan

Personalised recommendations