High-spin yrast structure of Hg204 from the decay of a four-hole, 22+ isomer

Wrzesiński, J.; Lane, G. J.; Maier, K. H.; Janssens, R. V.  F.; Dracoulis, G. D.; Broda, R.; Byrne, A. P.; Carpenter, M. P.; Clark, R. M.; Cromaz, M.; Fornal, B.; Lauritsen, T.; Macchiavelli, A. O.; Rejmund, M.; Szpak, B.; Vetter, K.; Zhu, S.

doi:10.1103/PhysRevC.92.044327

High-spin yrast structure of ${}^{204}{Hg}$ from the decay of a four-hole, $22^{+}$ isomer

Journal Article · Mon Oct 26 00:00:00 EDT 2015 · Physical Review C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.92.044327· OSTI ID:1378609

Wrzesiński, J. ^[1]; Lane, G. J. ^[2]; Maier, K. H. ^[3]; Janssens, R. V. F. ^[4]; Dracoulis, G. D. ^[2]; Broda, R. ^[1]; Byrne, A. P. ^[2]; Carpenter, M. P. ^[4]; Clark, R. M. ^[5]; Cromaz, M. ^[5]; Fornal, B. ^[1]; Lauritsen, T. ^[4]; Macchiavelli, A. O. ^[5]; Rejmund, M. ^[6]; Szpak, B. ^[1]; Vetter, K. ^[5]; Zhu, S. ^[4]

The Niedwodniczanski Institute of Nuclear Physics, PAN, Krakow (Poland)
The Australian National University, Canberra (Australia). Department of Nuclear Physics, Research School of Physical Sciences and Engineering
The Niedwodniczanski Institute of Nuclear Physics, PAN, Krakow (Poland); The Australian National University, Canberra (Australia). Department of Nuclear Physics, Research School of Physical Sciences and Engineering
Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
GANIL (France)

We present that a high-spin isomer with τ > 700 ns has been found in ²⁰⁴Hg, populated in reactions of 1360-MeV ²⁰⁸Pb and 330-MeV ⁴⁸Ca beams with a thick ²³⁸U target and a 1450-MeV ²⁰⁸Pb beam on a thick ²⁰⁸Pb target. The observed γ-ray decay of the isomer has established the yrast states below it, including another isomer with τ = 33(3) ns. The experimental results are compared with shell-model calculations that include four holes in the configuration space between ¹³²Sn and ²⁰⁸Pb. The available spectroscopic information, including transition strengths, total conversion, and angular correlation coefficients, together with the observed agreement with the calculations, allows spin, parity, and configuration assignments to be proposed for the experimental states. Finally, the τ > 700 ns isomer is the 22⁺ state of maximum spin available from the alignment of the four valence holes with the configuration πh$$-2\atop{11/2}$$vi$$-2\atop{13/2}$$.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

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

Grant/Contract Number:: AC02-05CH11231; AC02-06CH11357

OSTI ID:: 1378609

Alternate ID(s):: OSTI ID: 1224359
OSTI ID: 1237918

Journal Information:: Physical Review C, Nuclear Physics, Journal Name: Physical Review C, Nuclear Physics Journal Issue: 4 Vol. 92; ISSN 0556-2813; ISSN PRVCAN

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (2)

Study of isomeric states in ^{198,200,202,206} Pb and ²⁰⁶ Hg populated in fragmentation reactions Lalović, N.; Rudolph, D.; Podolyák, Zs Journal of Physics G: Nuclear and Particle Physics, Vol. 45, Issue 3 https://doi.org/10.1088/1361-6471/aaa9df	journal	February 2018
Doubly magic Pb 208 : High-spin states, isomers, and E 3 collectivity in the yrast decay Broda, R.; Janssens, R. V. F.; Iskra, Ł. W. Physical Review C, Vol. 95, Issue 6 https://doi.org/10.1103/physrevc.95.064308	journal	June 2017

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