corner
corner
APS » Journals » Phys. Rev. C » Volume 65 » Issue 4
< Previous Article | Next Article >

Phys. Rev. C 65, 044329 (2002) [22 pages]

Toward complete spectroscopy of 128Pr and rotational structures in 126Pr

Download: PDF (355 kB) Buy this article Export: BibTeX or EndNote (RIS)

D. J. Hartley, L. L. Riedinger, M. Danchev*, W. Reviol†, O. Zeidan, and Jing-ye Zhang
Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996

A. Galindo-Uribarri, C. J. Gross‡, C. Baktash, M. Lipoglavsek§, S. D. Paul**, D. C. Radford, and C.-H. Yu
Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831

D. G. Sarantites and M. Devlin††
Chemistry Department, Washington University, St. Louis, Missouri 63130

M. P. Carpenter, R. V. F. Janssens, and D. Seweryniak
Physics Division, Argonne National Laboratory, Argonne, Illinois 60439

E. Padilla
Instituto de Ciencias Nucleares, UNAM, 04510 Mexico, Distrito Federal, Mexico

Received 4 December 2001; published 5 April 2002

Over 240 transitions and three new rotational bands have been observed in the well-deformed, odd-odd 59128Pr69 nucleus. The high-spin states were populated in two experiments using the 92Mo(40Ca,3pn) reaction at beam energies of 170 and 184 MeV. Several structures were confirmed in the former experiment using the Clarion and HyBall arrays with the recoil mass spectrometer at Oak Ridge National Laboratory. Gammasphere, in conjunction with the Microball, were employed in the latter experiment at Argonne National Laboratory to extend the sequences to very high spins. Rotational structures in 126Pr were also identified in the αpn channel of the same reaction. The recent discrepancies of spin assignments for the yrast bands in 126,128Pr and the interpretation of the lowest crossing in the πh11/2 band in 127Pr are discussed. An adiabatic crossing of the intruder i13/2 neutron with one of the normal-deformed bands in 128Pr is observed at high rotational frequency. Experimental trends in the signature inversion phenomenon of the πh11/2νh11/2 bands in the A≈130 region are defined and prove to be surprisingly irregular with respect to those found in the πh11/2νi13/2 bands of the A≈160 region.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.65.044329
DOI:
10.1103/PhysRevC.65.044329
PACS:
21.10.Re, 23.20.Lv, 27.60.+j

*Permanent address: Faculty of Physics, St. Kliment Ohridsky University of Sofia, BG-1164 Sofia, Bulgaria.

†Present address: Chemistry Department, Washington University, St. Louis, MO 63130.

‡Also at Oak Ridge Institute of Science and Education, Oak Ridge, TN 37831.

§Present address: J. Stefan Institute, Ljubljana, Slovenia.

**Present address: Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400 005, India.

††Present address: Los Alamos National Laboratory, Los Alamos, NM 87545.

 
< Previous Article | Next Article >