Fission hindrances in transfermium nuclei
Very heavy nuclei owe their stability against spontaneous fission to quantum shell effects, which depend on the local density of single-particle states. The height but also the width and the structure of the barrier in multi-dimensional deformation space determine the fission half-lives. Other effec...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2023/16/epjconf_eunpc2023_02027.pdf |
| _version_ | 1797343961665241088 |
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| author | Lopez-Martens A. Hauschild K. Svirikhin A.I. Asfari Z. Chelnokov M.L Chepigin V.I. Dorvaux O. Forge M. Gall B. Isaev A.V. Izosimov I.N. Kessaci K. Kuznetsova A.A. Malyshev O.N. Mukhin R.S. Popeko A.G. Popov Yu.A. Sailaubekov B. Sokol E.A. Tezekbayeva M.S. Yeremin A.V. |
| author_facet | Lopez-Martens A. Hauschild K. Svirikhin A.I. Asfari Z. Chelnokov M.L Chepigin V.I. Dorvaux O. Forge M. Gall B. Isaev A.V. Izosimov I.N. Kessaci K. Kuznetsova A.A. Malyshev O.N. Mukhin R.S. Popeko A.G. Popov Yu.A. Sailaubekov B. Sokol E.A. Tezekbayeva M.S. Yeremin A.V. |
| author_sort | Lopez-Martens A. |
| collection | DOAJ |
| description | Very heavy nuclei owe their stability against spontaneous fission to quantum shell effects, which depend on the local density of single-particle states. The height but also the width and the structure of the barrier in multi-dimensional deformation space determine the fission half-lives. Other effects come into play, such as the conservation of quantum numbers and superfluidity or stiffness of the system in the fission process. This is why odd nuclei have longer fission partial half-lives with respect to their even neighbours and also why multi-quasi-particle states, such as high-K states, are thought to be more stable against fission than the ground state. We will report here on two different fission studies carried out with the GABRIELA detector array at the focal plane of the recoil separator SHELS. The first study concerns the fission properties of 253Rf, the most neutron deficient Rf isotope known to date. The second study focusses on a new measurement of the fission hindrance of the known 8- isomer in 254No. |
| first_indexed | 2024-03-08T10:55:23Z |
| format | Article |
| id | doaj.art-8398ebe9dfbd474caed9095e5e8514a4 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-03-08T10:55:23Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-8398ebe9dfbd474caed9095e5e8514a42024-01-26T16:38:38ZengEDP SciencesEPJ Web of Conferences2100-014X2023-01-012900202710.1051/epjconf/202329002027epjconf_eunpc2023_02027Fission hindrances in transfermium nucleiLopez-Martens A.0Hauschild K.1Svirikhin A.I.2Asfari Z.3Chelnokov M.L4Chepigin V.I.5Dorvaux O.6Forge M.7Gall B.8Isaev A.V.9Izosimov I.N.10Kessaci K.11Kuznetsova A.A.12Malyshev O.N.13Mukhin R.S.14Popeko A.G.15Popov Yu.A.16Sailaubekov B.17Sokol E.A.18Tezekbayeva M.S.19Yeremin A.V.20IJClab, Université Paris Saclay and CNRSIJClab, Université Paris Saclay and CNRSFLNR, JINRUniversité de Strasbourg, CNRS, IPHCFLNR, JINRFLNR, JINRUniversité de Strasbourg, CNRS, IPHCUniversité de Strasbourg, CNRS, IPHCUniversité de Strasbourg, CNRS, IPHCFLNR, JINRFLNR, JINRUniversité de Strasbourg, CNRS, IPHCFLNR, JINRFLNR, JINRFLNR, JINRFLNR, JINRFLNR, JINRFLNR, JINRFLNR, JINRFLNR, JINRFLNR, JINRVery heavy nuclei owe their stability against spontaneous fission to quantum shell effects, which depend on the local density of single-particle states. The height but also the width and the structure of the barrier in multi-dimensional deformation space determine the fission half-lives. Other effects come into play, such as the conservation of quantum numbers and superfluidity or stiffness of the system in the fission process. This is why odd nuclei have longer fission partial half-lives with respect to their even neighbours and also why multi-quasi-particle states, such as high-K states, are thought to be more stable against fission than the ground state. We will report here on two different fission studies carried out with the GABRIELA detector array at the focal plane of the recoil separator SHELS. The first study concerns the fission properties of 253Rf, the most neutron deficient Rf isotope known to date. The second study focusses on a new measurement of the fission hindrance of the known 8- isomer in 254No.https://www.epj-conferences.org/articles/epjconf/pdf/2023/16/epjconf_eunpc2023_02027.pdf |
| spellingShingle | Lopez-Martens A. Hauschild K. Svirikhin A.I. Asfari Z. Chelnokov M.L Chepigin V.I. Dorvaux O. Forge M. Gall B. Isaev A.V. Izosimov I.N. Kessaci K. Kuznetsova A.A. Malyshev O.N. Mukhin R.S. Popeko A.G. Popov Yu.A. Sailaubekov B. Sokol E.A. Tezekbayeva M.S. Yeremin A.V. Fission hindrances in transfermium nuclei EPJ Web of Conferences |
| title | Fission hindrances in transfermium nuclei |
| title_full | Fission hindrances in transfermium nuclei |
| title_fullStr | Fission hindrances in transfermium nuclei |
| title_full_unstemmed | Fission hindrances in transfermium nuclei |
| title_short | Fission hindrances in transfermium nuclei |
| title_sort | fission hindrances in transfermium nuclei |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2023/16/epjconf_eunpc2023_02027.pdf |
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