Population and decay of a Kπ=8– two-quasineutron isomer in Pu244

Hota, S. S.; Tandel, S. K.; Chowdhury, P.; Ahmad, I.; Carpenter, M. P.; Chiara, C. J.; Greene, J. P.; Hoffman, C. R.; Jackson, E. G.; Janssens, R. V. F.; Kay, B. P.; Khoo, T. L.; Kondev, F. G.; Lakshmi, S.; Lalkovski, S.; Lauritsen, T.; Lister, C. J.; McCutchan, E. A.; Moran, K.; Peterson, D.; Shirwadkar, U.; Seweryniak, D.; Stefanescu, I.; Toh, Y.; Zhu, S.

doi:10.1103/PhysRevC.94.021303

Title: Population and decay of a $K^{π} = 8^{-}$ two-quasineutron isomer in ${}^{244}{Pu}$

Journal Article · Mon Aug 22 00:00:00 EDT 2016 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.94.021303· OSTI ID:1339580

Hota, S. S. ^[1]; Tandel, S. K. ^[2]; Chowdhury, P. ^[3]; Ahmad, I. ^[4]; Carpenter, M. P. ^[4]; Chiara, C. J. ^[5]; Greene, J. P. ^[4]; Hoffman, C. R. ^[4]; Jackson, E. G. ^[3]; Janssens, R. V. F. ^[4]; Kay, B. P. ^[4]; Khoo, T. L. ^[4]; Kondev, F. G. ^[4]; Lakshmi, S. ^[6]; Lalkovski, S. ^[7]; Lauritsen, T. ^[4]; Lister, C. J. ^[8]; McCutchan, E. A. ^[9]; Moran, K. ^[3]; Peterson, D. ^[4] more »

Univ. of Massachusetts, Lowell, MA (United States); Australian National Univ., Canberra, ACT (Australia)
Univ. of Massachusetts, Lowell, MA (United States); UM-DAE Centre for Excellence in Basic Sciences, Mumbai (India)
Univ. of Massachusetts, Lowell, MA (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Maryland, College Park, MD (United States); Univ. of Sofia, Sofia (Bulgaria); Ames Research Lab., Adelphi, MD (United States)
Univ. of Massachusetts, Lowell, MA (United States); Radiation Monitoring Devices, Inc., Watertown, MA (United States)
Univ. of Sofia, Sofia (Bulgaria)
Univ. of Massachusetts, Lowell, MA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Maryland, College Park, MD (United States)
Japan Atomic Energy Agency, Ibaraki (Japan)

Here, the decay of a K^π = 8^– isomer in ²⁴⁴Pu and the collective band structures populating the isomer were studied using deep inelastic excitations with ⁴⁷Ti and ²⁰⁸Pb beams, respectively. Precise measurements of M1/E2 branching ratios in the band confirm a 9/2^–[734]_νⓍ7/2⁺[624]_ν configuration assignment for the isomer, validating the systematics of K^π = 8^–, two-quasineutron isomers observed in even-Z, N = 150 isotones. These isomers around the deformed shell gap at N = 152 provide critical benchmarks for theoretical predictions of single-particle energies in this gateway region to superheavy nuclei.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division

Grant/Contract Number:: AC02-06CH11357; FG02-94ER40848; FG02-94ER40834

OSTI ID:: 1339580

Alternate ID(s):: OSTI ID: 1328619

Journal Information:: Physical Review C, Vol. 94, Issue 2; ISSN 2469-9985

Publisher:: APSCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 6 works

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