First Exploration of Neutron Shell Structure below Lead and beyond N=126
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. et al. (2020). First Exploration of Neutron Shell Structure below Lead and beyond N=126. Physical Review Letters, 124 (6), 062502. DOI: 10.1103/PhysRevLett.124.062502
Published inPhysical Review Letters
© 2020 the Authors
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.
PublisherAmerican Physical Society
Publication in research information system
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Related funder(s)Academy of Finland; European Commission
Funding program(s)Academy Project, AoF
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.