First Exploration of Neutron Shell Structure below Lead and beyond
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.
- Authors:
-
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- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- Laboratory Directed Research and Development (LDRL); USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1599678
- Alternate Identifier(s):
- OSTI ID: 1605991
- Grant/Contract Number:
- AC02-06CH11357; 89233218CNA000001; 20190021DR
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Name: Physical Review Letters Journal Volume: 124 Journal Issue: 6; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Binding energy & masses; Direct reactions; Nuclear binding; Nuclear physics of explosive environments; Nuclear reactions; Nucleosynthesis in explosive environments; Transfer reactions
Citation Formats
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., MacGregor, P. T., Martel, I., Page, R. D., Podolyák, Zs., Poleshchuk, O., Raabe, R., Recchia, F., Smith, J. F., Szwec, S. V., and Yang, J. First Exploration of Neutron Shell Structure below Lead and beyond N=126. United States: N. p., 2020.
Web. doi:10.1103/PhysRevLett.124.062502.
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., MacGregor, P. T., Martel, I., Page, R. D., Podolyák, Zs., Poleshchuk, O., Raabe, R., Recchia, F., Smith, J. F., Szwec, S. V., & Yang, J. First Exploration of Neutron Shell Structure below Lead and beyond N=126. United States. https://doi.org/10.1103/PhysRevLett.124.062502
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., MacGregor, P. T., Martel, I., Page, R. D., Podolyák, Zs., Poleshchuk, O., Raabe, R., Recchia, F., Smith, J. F., Szwec, S. V., and Yang, J. Sat .
"First Exploration of Neutron Shell Structure below Lead and beyond N=126". United States. https://doi.org/10.1103/PhysRevLett.124.062502.
@article{osti_1599678,
title = {First Exploration of Neutron Shell Structure below Lead and beyond N=126},
author = {Tang, T. L. and Kay, B. P. and Hoffman, C. R. and Schiffer, J. P. and Sharp, D. K. and Gaffney, L. P. and Freeman, S. J. and Mumpower, M. R. and Arokiaraj, A. and Baader, E. F. and Butler, P. A. and Catford, W. N. and de Angelis, G. and Flavigny, F. and Gott, M. D. and Gregor, E. T. and Konki, J. and Labiche, M. and Lazarus, I. H. and MacGregor, P. T. and Martel, I. and Page, R. D. and Podolyák, Zs. and Poleshchuk, O. and Raabe, R. and Recchia, F. and Smith, J. F. and Szwec, S. V. and Yang, J.},
abstractNote = {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.},
doi = {10.1103/PhysRevLett.124.062502},
journal = {Physical Review Letters},
number = 6,
volume = 124,
place = {United States},
year = {2020},
month = {2}
}
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https://doi.org/10.1103/PhysRevLett.124.062502
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