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Title: Persistence of collective behavior at high spin in the N = 88 nucleus Tb 153

Abstract

Excited states in the N = 88 nucleus Tb-153 were observed up to spin similar to 40 in an experiment utilizing the Gammasphere array. The Tb-153 states were populated in a weak alpha 4n evaporation channel of the Cl-37 + Sn-124 reaction. Two previously known sequences were extended to higher spins, and a new decoupled structure was identified. The pi h(11/2) band was observed in the spin region where other N = 88 isotopes exhibit effects of prolate to oblate shape changes leading to band termination along the yrast line, whereas Tb-153 displays a persistent collective behavior. However, minor perturbations of the very highest state in both signatures of this h(11/2) band are observed, which perhaps signal the start of the transition towards band termination.

Authors:
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Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Nuclear Physics; National Science Foundation (NSF)
OSTI Identifier:
1391968
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 91; Journal Issue: 5; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Hartley, D. J., Riley, M. A., Wang, X., Miller, S., Janssens, R. V. F., Paul, E. S., Rees, J. M., Simpson, J., Riedinger, L. L., Ayangeakaa, A. D., Carpenter, M. P., Chiara, C. J., Garg, U., Hampson, P., Hoffman, C. R., Kondev, F. G., Lauritsen, T., Mason, P. J. R., Matta, J. T., Nolan, P. J., Ollier, J., Petri, M., Radford, D. C., Revill, J. P., Zhu, S., and Ragnarsson, I. Persistence of collective behavior at high spin in the N=88 nucleus Tb153. United States: N. p., 2015. Web. doi:10.1103/PhysRevC.91.057301.
Hartley, D. J., Riley, M. A., Wang, X., Miller, S., Janssens, R. V. F., Paul, E. S., Rees, J. M., Simpson, J., Riedinger, L. L., Ayangeakaa, A. D., Carpenter, M. P., Chiara, C. J., Garg, U., Hampson, P., Hoffman, C. R., Kondev, F. G., Lauritsen, T., Mason, P. J. R., Matta, J. T., Nolan, P. J., Ollier, J., Petri, M., Radford, D. C., Revill, J. P., Zhu, S., & Ragnarsson, I. Persistence of collective behavior at high spin in the N=88 nucleus Tb153. United States. doi:10.1103/PhysRevC.91.057301.
Hartley, D. J., Riley, M. A., Wang, X., Miller, S., Janssens, R. V. F., Paul, E. S., Rees, J. M., Simpson, J., Riedinger, L. L., Ayangeakaa, A. D., Carpenter, M. P., Chiara, C. J., Garg, U., Hampson, P., Hoffman, C. R., Kondev, F. G., Lauritsen, T., Mason, P. J. R., Matta, J. T., Nolan, P. J., Ollier, J., Petri, M., Radford, D. C., Revill, J. P., Zhu, S., and Ragnarsson, I. Fri . "Persistence of collective behavior at high spin in the N=88 nucleus Tb153". United States. doi:10.1103/PhysRevC.91.057301.
@article{osti_1391968,
title = {Persistence of collective behavior at high spin in the N=88 nucleus Tb153},
author = {Hartley, D. J. and Riley, M. A. and Wang, X. and Miller, S. and Janssens, R. V. F. and Paul, E. S. and Rees, J. M. and Simpson, J. and Riedinger, L. L. and Ayangeakaa, A. D. and Carpenter, M. P. and Chiara, C. J. and Garg, U. and Hampson, P. and Hoffman, C. R. and Kondev, F. G. and Lauritsen, T. and Mason, P. J. R. and Matta, J. T. and Nolan, P. J. and Ollier, J. and Petri, M. and Radford, D. C. and Revill, J. P. and Zhu, S. and Ragnarsson, I.},
abstractNote = {Excited states in the N = 88 nucleus Tb-153 were observed up to spin similar to 40 in an experiment utilizing the Gammasphere array. The Tb-153 states were populated in a weak alpha 4n evaporation channel of the Cl-37 + Sn-124 reaction. Two previously known sequences were extended to higher spins, and a new decoupled structure was identified. The pi h(11/2) band was observed in the spin region where other N = 88 isotopes exhibit effects of prolate to oblate shape changes leading to band termination along the yrast line, whereas Tb-153 displays a persistent collective behavior. However, minor perturbations of the very highest state in both signatures of this h(11/2) band are observed, which perhaps signal the start of the transition towards band termination.},
doi = {10.1103/PhysRevC.91.057301},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 5,
volume = 91,
place = {United States},
year = {2015},
month = {5}
}

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