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Phys. Rev. C 58, R3042–R3045 (1998)

In-beam spectroscopy study of the proton emitter 151Lu

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C.-H. Yu1, J. C. Batchelder2, C. R. Bingham3, R. Grzywacz3,5, K. Rykaczewski1,5, K. S. Toth1, Y. Akovali1, C. Baktash1, A. Galindo-Uribarri1, T. N. Ginter4, C. J. Gross1,2, M. Karny5, S. H. Kim3, B. D. MacDonald6, S. D. Paul1, D. C. Radford1, J. Szerypo7, and W. Weintraub3
1Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
2Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee 37831
3Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
4Department of Physics, Vanderbilt University, Nashville, Tennessee 37235
5Institute of Experimental Physics, Warsaw University, Warsaw, Hoza 69, Poland
6School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332
7Joint Institute for Heavy Ion Research, Oak Ridge, Tennessee 37831

Received 23 September 1998; published in the issue dated December 1998

Gamma rays decaying from the excited states of the proton-unbound 151Lu were observed for the first time in an experiment using the 96Ru(58Ni,p2n)151Lu reaction. These γ rays were identified by correlating prompt γ radiations at the target position with 151Lu proton radioactivities at the focal plane of a recoil mass separator. Systematic data on N=80 isotones suggest a possible isomeric level at high spin in 151Lu. Our measurement was unable to observe such an isomer, but provided an upper limit on its half-life. The observed γ rays in 151Lu can be interpreted in terms of two possible level structures.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.58.R3042
DOI:
10.1103/PhysRevC.58.R3042
PACS:
23.50.+z, 21.10.Pc, 23.20.Lv, 27.70.+q
 
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