Energy levels in98251Cf populated in the α decay of100255Fm

Phys. Rev. C 62, 064302 – Published 25 October 2000
I. Ahmad, M. P. Carpenter, R. R. Chasman, J. P. Greene, R. V. F. Janssens, T. L. Khoo, F. G. Kondev, T. Lauritsen, C. J. Lister, P. Reiter, D. Seweryniak, A. Sonzogni, J. Uusitalo, I. Wiedenhöver, and P. Bhattacharyya

Abstract

Gamma-ray spectra of a 20-h 255Fm source containing 1 mCi activity were measured with a 25% Ge detector and a low-energy photon spectrometer (LEPS). Gamma lines with intensities as low as 1.0×10-6% per 255Fm α decay were observed. Gamma-gamma coincidence spectra of a 255Fm sample were measured with the GAMMASPHERE array. A comparison of the γ-ray spectrum gated by the Cf Kα x-ray peak with the γ-singles spectrum provided spins of the excited states in 251Cf. The γ-ray data, in conjunction with previously measured 250Cf(d,p) reaction data, allowed us to characterize several single-particle and vibrational states above the N=152 subshell gap.

DOI: http://dx.doi.org/10.1103/PhysRevC.62.064302

  • Received 25 August 2000
  • Published 25 October 2000

© 2000 The American Physical Society

Authors & Affiliations

I. Ahmad, M. P. Carpenter, R. R. Chasman, J. P. Greene, R. V. F. Janssens, T. L. Khoo, F. G. Kondev, T. Lauritsen, C. J. Lister, P. Reiter, D. Seweryniak, A. Sonzogni, J. Uusitalo, and I. Wiedenhöver

  • Argonne National Laboratory, Argonne, Illinois 60439

P. Bhattacharyya

  • Purdue University, West Lafayette, Indiana 47909

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