First Exploration of Neutron Shell Structure below Lead and beyond N=126
Abstract
The nuclei below lead but with more than 126 neutrons are crucial to an understanding of the astrophysical r process in producing nuclei heavier than A∼190. Despite their importance, the structure and properties of these nuclei remain experimentally untested as they are difficult to produce in nuclear reactions with stable beams. In a first exploration of the shell structure of this region, neutron excitations in 207Hg have been probed using the neutron-adding (d,p) reaction in inverse kinematics. The radioactive beam of 206Hg was delivered to the new ISOLDE Solenoidal Spectrometer at an energy above the Coulomb barrier. The spectroscopy of 207Hg marks a first step in improving our understanding of the relevant structural properties of nuclei involved in a key part of the path of the r process.
Main Authors
Format
Articles
Research article
Published
2020
Series
Subjects
Publication in research information system
Publisher
American Physical Society
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202003092337Käytä tätä linkitykseen.
Review status
Peer reviewed
ISSN
0031-9007
DOI
https://doi.org/10.1103/PhysRevLett.124.062502
Language
English
Published in
Physical Review Letters
Citation
- Tang, T. L., Kay, B. P., Hoffman, C. R., Schiffer, J. P., Sharp, D. K., Gaffney, L. P., Freeman, S. J., Mumpower, M. R., Arokiaraj, A., Baader, E. F., Butler, P. A., Catford, W. N., de Angelis, G., Flavigny, F., Gott, M. D., Gregor, E. T., Konki, J., Labiche, M., Lazarus, I. H., . . . Yang, J. (2020). First Exploration of Neutron Shell Structure below Lead and beyond N=126. Physical Review Letters, 124(6), Article 062502. https://doi.org/10.1103/PhysRevLett.124.062502
License
Funder(s)
European Commission
Research Council of Finland
Funding program(s)
Research infrastructures, H2020
Academy Project, AoF
Research infrastructures, H2020
Akatemiahanke, SA
Additional information about funding
This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357 (ANL), the UK Science and Technology Facilities Council [Grants No. ST/P004598/1, No. ST/N002563/1, No. ST/M00161X/1 (Liverpool); No. ST/P004423/1 (Manchester); No. ST/P005314/1 (Surrey); No. ST/P005101/1 (West of Scotland); the ISOL-SRS Grant (Daresbury)], the European Union’s Horizon 2020 Framework research and innovation program under Grant Agreement No. 654002 (European Nuclear Science and Applications Research) and the Marie Skłodowska-Curie Grant Agreement No. 665779, and from the Research Foundation Flanders (Belgium) under the Big Science project G0C28.13, and the European Research Council (ERC) under the European Union’s Seventh Framework Programme (FP7/2007-2013)/ERC Grant Agreement No. 617156. M. R. M. was supported by the U.S. Department of Energy through the Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Triad National Security, Limited Liability Company, for the National Nuclear Security Administration of U.S. Department of Energy (Contract No. 89233218CNA000001). S. V. S. was supported by the Academy of Finland (Grant No. 307685). M. R. M. was also supported by the Laboratory Directed Research and Development program of Los Alamos National Laboratory under Project No. 20190021DR.
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