Decoupled and semi-decoupled bands in Hg197 and Hg199

Negi, D.; Tandel, S. K.; Chauhan, P.; Chowdhury, P.; Janssens, R. V.  F.; Carpenter, M. P.; Khoo, T. L.; Kondev, F. G.; Lauritsen, T.; Lister, C. J.; Seweryniak, D.; Zhu, S.

doi:10.1103/PhysRevC.100.014329

Decoupled and semi-decoupled bands in ${}^{197}{Hg}$ and ${}^{199}{Hg}$

Journal Article · Wed Jul 31 00:00:00 EDT 2019 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.100.014329· OSTI ID:1560057

Negi, D. ^[1]; Tandel, S. K. ^[2]; Chauhan, P. ^[1]; Chowdhury, P. ^[3]; Janssens, R. V. F. ^[4]; Carpenter, M. P. ^[5]; Khoo, T. L. ^[5]; Kondev, F. G. ^[5]; Lauritsen, T. ^[5]; Lister, C. J. ^[6]; Seweryniak, D. ^[5]; Zhu, S. ^[5]

Univ. of Mumbai (India)
Univ. of Mumbai (India); Univ. of Massachusetts, Lowell, MA (United States)
Univ. of Massachusetts, Lowell, MA (United States)
Univ. of North Carolina, Chapel Hill, NC (United States); Duke Univ., Durham, NC (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Univ. of Massachusetts, Lowell, MA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)

Here, the structure of decoupled positive-parity and semidecoupled negative-parity bands up to high spin in ^197,199Hg has been studied using multinucleon transfer reactions with the Gammasphere array. A positive-parity band in ¹⁹⁹Hg with the (vi_13/2)³ decoupled configuration that deexcites to levels in the negative-parity sequences is newly established. The semidecoupled sequences in both isotopes are extended to higher spin. Rotation-aligned angular momenta and crossing frequencies determined from experiment are in fair agreement with those from cranking calculations. Finally, a transition from oblate collective rotation at low spin to triaxial noncollective shapes at high spin is indicated.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: AC02-06CH11357; FG02-94ER40834; FG02-94ER40848; FG02-97ER41033; FG02-97ER41041

OSTI ID:: 1560057

Alternate ID(s):: OSTI ID: 1545945

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 1 Vol. 100; ISSN 2469-9985; ISSN PRVCAN

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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