Rotational Bands in the Proton Emitter H141o

D. Seweryniak, P. J. Woods, J. J. Ressler, C. N. Davids, A. Heinz, A. A. Sonzogni, J. Uusitalo, W. B. Walters, J. A. Caggiano, M. P. Carpenter, J. A. Cizewski, T. Davinson, K. Y. Ding, N. Fotiades, U. Garg, R. V. F. Janssens, T. L. Khoo, F. G. Kondev, T. Lauritsen, C. J. Lister, P. Reiter, J. Shergur, and I. Wiedenhöver
Phys. Rev. Lett. 86, 1458 – Published 19 February 2001
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Abstract

Rotational bands feeding the ground state and the isomeric state in the proton emitter 141Ho were observed using the recoil-decay tagging method. This constitutes direct evidence that 141Ho is deformed. A quadrupole deformation of β2=0.25(4) was deduced for the ground state from the extracted dynamic moment of inertia. Based on observed band crossings and signature splittings the 7/2[523] and 1/2+[411] configurations were proposed for the ground state and the isomeric state, respectively. Comparison with particle-rotor calculations for β2=0.25 indicates, however, that 141Ho may have significant hexadecapole deformation and could be triaxial in the 7/2[523] ground state.

  • Received 31 July 2000

DOI:https://doi.org/10.1103/PhysRevLett.86.1458

©2001 American Physical Society

Authors & Affiliations

D. Seweryniak1,2, P. J. Woods3, J. J. Ressler2, C. N. Davids1, A. Heinz1, A. A. Sonzogni1, J. Uusitalo1, W. B. Walters2, J. A. Caggiano1, M. P. Carpenter1, J. A. Cizewski4, T. Davinson3, K. Y. Ding4, N. Fotiades4, U. Garg5, R. V. F. Janssens1, T. L. Khoo1, F. G. Kondev1, T. Lauritsen1, C. J. Lister1, P. Reiter1, J. Shergur2, and I. Wiedenhöver1

  • 1Argonne National Laboratory, Argonne, Illinois, 60439
  • 2University of Maryland, College Park, Maryland, 20742
  • 3University of Edinburgh, Edinburgh, EH9 3JZ United Kingdom
  • 4Rutgers University, New Brunswick, New Jersey, 08903
  • 5University of Notre Dame, Notre Dame, Indiana, 46556

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Vol. 86, Iss. 8 — 19 February 2001

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