(d, p) and (d, t) Reaction Studies of the Actinide Elements. I. U235

Phys. Rev. C 1, 275 – Published 1 January 1970
T. H. Braid, R. R. Chasman, J. R. Erskine, and A. M. Friedman


Levels of the nucleus U235, populated in the reactions U234(d, p)U235 and U236(d, t)U235 induced by 12-MeV deuterons from the Argonne tandem Van de Graaff, were analyzed with a magnetic spectrograph. Most of the observed levels were identified as members of rotational bands built on the single-particle states of a deformed central field. The level assignments were made on the basis of relative populations of presumed members of each rotational band, ratios of the cross sections at 90° and 140°, and (d, p)(d, t) cross-section ratios. Pairing effects were calculated for the observed spectrum, and a single-particle scheme was extracted from the data. This single-particle scheme was compared with the calculations of Nilsson and Rost. Levels not predicted on the basis of the single-particle models were observed at excitations as low as 700 keV. Some of these levels, presumably vibrational excitations, were found to have cross sections comparable to those of single-particle states.

DOI: http://dx.doi.org/10.1103/PhysRevC.1.275

  • Received 2 September 1969
  • Published in the issue dated January 1970

© 1970 The American Physical Society

Authors & Affiliations

T. H. Braid, R. R. Chasman, J. R. Erskine, and A. M. Friedman

  • Argonne National Laboratory, Argonne, Illinois 60439

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