Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session 4WQB: Recent Highlights and Future Opportunities for In-beam Gamma-ray Spectroscopy in North America and Japan IIInvited Workshop
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Chair: Pieter Doornenbal Room: Hilton Waikoloa Village Kona 2-3 |
Monday, November 27, 2023 4:00PM - 4:30PM |
4WQB.00001: In-beam spectroscopy with Gammasphere and Argonne Gas-Filled Analyzer Invited Speaker: Dariusz Seweryniak Search for super-heavy nuclei is one of the frontiers of nuclear physics. Super-heavy nuclei owe their existence to shell corrections which overcome the Coulomb repulsion. However, spectroscopy of the heaviest known nuclei is limited to their alpha and fission decay properties. On the other hand, trans-fermium nuclei near the Z=100, N=152 closed deformed shells are produced with much larger cross sections and can be studied in more detail using various spectroscopic methods. The combination of the Gammasphere array of Ge detectors and the Argonne Gas-Filled Analyzer (AGFA) is a powerful tool for in-beam gamma-ray studies of trans-fermium nuclei. It can be used to determine rotational properties of nuclei near Z=100, N=152 in order to learn about deformation, sequence of single-nucleon orbitals near the Fermi surface and pairing correlations in these heavy nuclei. This information can aid in extrapolating existing nuclear models to the heaviest known nuclei and, among others, in pinning down the location of the so-called “island of stability” of super-heavy nuclei. During the talk, recent results obtained with Gammasphere and AGFA will be presented and future prospects for in-beam studies of more neutron-deficient nuclei at the fission limit and of heavier nuclei towards the Z=108, N=162 closed deformed shells will be discussed. |
Monday, November 27, 2023 4:30PM - 5:00PM |
4WQB.00002: Nuclear spectroscopy in mass 40 region Invited Speaker: Shintaro Go Nuclei in the mass 40 region exhibit interesting phenomena related to nuclear structure. In the neutron-rich region, the structural changes have been extensively investigated to provide the understanding of "Island of inverstion". In high-spin states, investigations on superdeformed bands provide the structural information in the excited states. The experimental studies of this region could also provide important data set for different theoretical models. In this sense, the region could be one of unique fields to investigate the nuclear properties by changing the number of protons/neutrons and excited levels. In this presentation, the recent research activities in the mass 40 region will be highligted. After the overview, possible future in-beam gamma-ray experiments with highly-effieicnt position-sensitive gamma-ray detectors will be discussed. |
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