High-spin yrast structure of from the decay of a four-hole, isomer
Abstract
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$$-2\atop{13/2}$$.
- Authors:
-
- 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)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1378609
- Alternate Identifier(s):
- OSTI ID: 1224359
- Grant/Contract Number:
- AC02-05CH11231; AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C, Nuclear Physics
- Additional Journal Information:
- Journal Volume: 92; Journal Issue: 4; Journal ID: ISSN 0556-2813
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
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., and Zhu, S. High-spin yrast structure of Hg204 from the decay of a four-hole, 22+ isomer. United States: N. p., 2015.
Web. doi:10.1103/PhysRevC.92.044327.
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. High-spin yrast structure of Hg204 from the decay of a four-hole, 22+ isomer. United States. https://doi.org/10.1103/PhysRevC.92.044327
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., and Zhu, S. Mon .
"High-spin yrast structure of Hg204 from the decay of a four-hole, 22+ isomer". United States. https://doi.org/10.1103/PhysRevC.92.044327. https://www.osti.gov/servlets/purl/1378609.
@article{osti_1378609,
title = {High-spin yrast structure of Hg204 from the decay of a four-hole, 22+ isomer},
author = {Wrzesiński, J. and Lane, G. J. and Maier, K. H. and Janssens, R. V. F. and Dracoulis, G. D. and Broda, R. and Byrne, A. P. and Carpenter, M. P. and Clark, R. M. and Cromaz, M. and Fornal, B. and Lauritsen, T. and Macchiavelli, A. O. and Rejmund, M. and Szpak, B. and Vetter, K. and Zhu, S.},
abstractNote = {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$-2\atop{13/2}$.},
doi = {10.1103/PhysRevC.92.044327},
journal = {Physical Review C, Nuclear Physics},
number = 4,
volume = 92,
place = {United States},
year = {Mon Oct 26 00:00:00 EDT 2015},
month = {Mon Oct 26 00:00:00 EDT 2015}
}
Web of Science
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Works referencing / citing this record:
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