First Exploration of Neutron Shell Structure below Lead and beyond N=126
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 nucle...
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| Veröffentlicht in: | Physical Review Letters 2020-02, Vol.124 (6) |
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| creator | Tang, T.L Kay, B.P Hoffman, C.R Schiffer, J.P Sharp, D.K Gaffney, L.P Freeman, S.J Mumpower, M.R Arokia Raj, 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, Z Poleshchuk, O Raabe, R Recchia, F Smith, J.F Szwec, S.V Yang, J |
| description | 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 ^{207}Hg have been probed using the neutron-adding (d,p) reaction in inverse kinematics. The radioactive beam of ^{206}Hg was delivered to the new ISOLDE Solenoidal Spectrometer at an energy above the Coulomb barrier. The spectroscopy of ^{207}Hg 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. |
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| title | First Exploration of Neutron Shell Structure below Lead and beyond N=126 |
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