Neutron-hole strength in the N = 81 isotones

Authors

A. M. Howard, The University of Manchester
S. J. Freeman, The University of Manchester
J. P. Schiffer, Argonne National Laboratory
T. Bloxham, Lawrence Berkeley National Laboratory
J. A. Clark, Argonne National Laboratory
C. M. Deibel, Argonne National Laboratory
B. P. Kay, Argonne National Laboratory
P. D. Parker, Yale University
D. K. Sharp, The University of Manchester
J. S. Thomas, The University of Manchester

Document Type

Conference Proceeding

Publication Date

1-1-2012

Abstract

The distribution of neutron-hole strength has been studied in the N 81 isotones 137Ba, 139Ce, 141Nd and 143Sm through the single-neutron removing reactions (p,d) and ( 3He,α), at energies of 23 and 34 MeV, respectively. Systematic cross section measurements were made at angles sensitive to the transferred angular momentum, and spectroscopic factors extracted through a distorted-wave Born approximation analysis. Application of the MacFarlane-French sum rules indicate an anomalously low summed g7/2 spectroscopic factor, most likely due to extensive fragmentation of the single-particle strength. Single-particle energies, based upon the centroids of observed strength, are presented. © Published under licence by IOP Publishing Ltd.

Publication Source (Journal or Book title)

Journal of Physics: Conference Series

Recommended Citation

Howard, A., Freeman, S., Schiffer, J., Bloxham, T., Clark, J., Deibel, C., Kay, B., Parker, P., Sharp, D., & Thomas, J. (2012). Neutron-hole strength in the N = 81 isotones. Journal of Physics: Conference Series, 381 (1) https://doi.org/10.1088/1742-6596/381/1/012098