Fission of odd-A and doubly odd actinide nuclei induced by direct reactions

B. B. Back, H. C. Britt, Ole Hansen, B. Leroux, and J. D. Garrett
Phys. Rev. C 10, 1948 – Published 1 November 1974
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Abstract

Fission probability distributions have been measured using (d,pf), (t,pf), (He3,df), (He3,αf), and (t,αf) reactions to excite a variety of odd-A and odd-odd actinide nuclei. Fission of the residual nuclei Th229,231, Pa231,232,233, Np234,235,236,237,238,239, Pu241, Am240,241,243,245,247, Cm249, and Bk249 was studied. These results and other data available from previous (d,pf), (t,pf), and (n,f) studies are analyzed with a statistical model to obtain estimates of the heights and curvatures of one or both peaks of the double humped fission barrier. Estimates of barrier parameters are obtained for the above nuclei and for Th233, U235,237,239, Pu239,243,245, Am242,244, Cm245,247, and Cf253. Systematic variations of the barrier parameters are discussed.

NUCLEAR REACTIONS, FISSION Measured fission probabilities, E*7.5 MeV for Th229,231, Pa231,232,233, Np234,235,236,237,238,239, Pu241, Am240,241,243,245,247, Cm249, and Bk249 using (d,pf), (t,pf), (He3,df), (He3,αf), and (t,αf) reactions. Deduced properties of the double peaked fission barrier for these nuclei and for Th233, U235,237,239, Pu239,243,245, Am242,244, Cm245,247, and Cf253.

  • Received 23 May 1974

DOI:https://doi.org/10.1103/PhysRevC.10.1948

©1974 American Physical Society

Authors & Affiliations

B. B. Back*, H. C. Britt, Ole Hansen*, and B. Leroux

  • Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87544

J. D. Garrett

  • Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87544
  • Brookhaven National Laboratory, Upton, New York 11973

  • *Permanent address: Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.
  • Permanent address: University of Bordeaux, Bordeaux, France.
  • Permanent address: Brookhaven National Laboratory, Upton, New York 11973.

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Vol. 10, Iss. 5 — November 1974

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