Identification of a proton-emitting isomer in {sup 151}Lu

Journal Article · Tue Jun 01 04:00:00 EDT 1999 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.59.R2984· OSTI ID:354023

Bingham, C R; Grzywacz, R; Kim, S H; Weintraub, W ^[1]; Bingham, C R; Rykaczewski, K; Toth, K S; Yu, C; Gross, C J; Mas, J; McConnell, J W ^[2]; Batchelder, J C ^[3]; Rykaczewski, K; Grzywacz, R; Karny, M ^[4]; Ginter, T N ^[5]; Gross, C J ^[6]; MacDonald, B D ^[7]; Karny, M; Mas, J ; Szerypo, J ^[8]; Semmes, P B ^[9]; Zganjar, E F ^[10]

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1. The University of Tennessee, Knoxville, Tennessee 37996 (United States)
2. Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
3. UNIRIB/Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831 (United States)
4. IEP, Warsaw University, 00681 Warsaw, Hoza 69 (Poland)
5. Vanderbilt University, Nashville, Tennessee 37235 (United States)
6. Oak Ridge Institute of Science and Education, Oak Ridge, Tennessee 37831 (United States)
7. Georgia Institute of Technology, Atlanta, Georgia 30332 (United States)
8. Joint Institute for Heavy Ion Research, Oak Ridge, Tennessee 37831 (United States)
9. Tennessee Technological University, Cookeville, Tennessee 38505 (United States)
10. Louisiana State University, Baton Rouge, Louisiana 70803 (United States)

An isomer of {sup 151}Lu was identified by its direct proton radioactivity. It was produced by bombardment of {sup 96}Ru with 266-MeV {sup 58}Ni from the Holifield Radioactive-Ion Beam Facility, mass separated with a recoil separator and implanted in a double-sided silicon strip detector, which provided signals to correlate each proton decay with a particular implant. The proton energy and half-life of {sup 151}Lu{sup m} were measured to be 1310(10) keV and 16(1) {mu}s, respectively. The half-life of the previously known h{sub 11/2} ground state was observed to be 80(2) ms in agreement with the previously adopted value of 88(10) ms. Comparison of the half-life of {sup 151}Lu{sup m} with WKB barrier-penetration calculations leads to the conclusion that the isomer is a d{sub 3/2} proton state. A two-potential approach predicts a half-life of 5.5{sub {minus}1.1}{sup +1.4} {mu}s which yields an experimental spectroscopic factor of 0.34{sub {minus}0.08}{sup +0.12}. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 354023
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 59; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HALF-LIFE
ISOMERS
LUTETIUM ISOTOPES
NICKEL 58
PROTON-EMISSION DECAY
RUTHENIUM 96 TARGET
SPECTROSCOPIC FACTORS
WKB APPROXIMATION