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Ms Sanjanee Waniganeththi (Brookhaven National Laboratory)15/06/2026, 12:30Poster Presentations
A low-background gamma counting facility has been developed by the National Nuclear Data Center (NNDC) at Brookhaven National Laboratory. The facility is housed within a purpose-built cave that has historically operated as a whole-body counter and is a shielded room constructed of 6-inch steel and lined with lead, cadmium, and copper [1] for shielding against the low-energy components of...
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Paweł Wakuluk (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland)15/06/2026, 12:30Poster Presentations
Over the past several years, extensive studies have been devoted to the structure of neutron rich tin isotopes, which possess a closed proton shell, with ¹³²Sn being a doubly magic nucleus. For this reason, these nuclei play a particularly important role in testing the validity of the nuclear shell model and serve as a benchmark for theoretical predictions. Information obtained in this region...
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smain sekal (TENNESSEE TECH UNIVERSITY for GRIFFIN Collaboration)15/06/2026, 12:30Poster Presentations
The $\beta^-$ decay of $^{34}$Mg has been exploited to probe the nuclear structure of $^{34}$Al at the boundary of the $N=20$ Island of Inversion, using high-efficiency $\gamma$ spectroscopy at the GRIFFIN spectrometer (TRIUMF–ISAC). Absolute $\beta$-feeding intensities and corresponding $\log ft$ values were extracted, and $\gamma$--$\gamma$ angular-correlation measurements were performed to...
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Michał Młynarczyk (Faculty of Physics, University of Warsaw, PL-02-093 Warsaw, Poland)15/06/2026, 12:50Poster Presentations
The precise investigation of $\beta$-decay properties across various regions of the nuclear chart requires highly optimized experimental setups to minimize background contamination from long-lived daughter activities. In this context, detailed Monte Carlo simulations were developed using the Geant4 toolkit to optimize the design and operation of a movable tape-transport system.
The...
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Mr Michał Młynarczyk (Faculty of Physics, University of Warsaw, PL-02-093 Warsaw, Poland)15/06/2026, 12:50Poster Presentations
The investigation of $\beta$-decay properties of neutron-rich nuclei in the A $\approx $ 120 region provides essential input for testing modern nuclear-structure models and for constraining astrophysical r-process simulations. In this context, the $\beta^-$ decay of $^{118}$Pd (Z = 46, N = 72) populating excited states in $^{118}$Ag was studied at the Ion Guide Isotope Separator On-Line...
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Nobuyuki Iwamoto (JAEA)15/06/2026, 12:50Poster Presentations
Neutron fission cross-sections of minor actinides (MAs) are important to design reactors with MA-loaded fuels. Among the fission cross-sections of MAs, particularly $^{245}$Cm shows a noticeable difference between existing measured data and JENDL-5 [1] below 10 eV. A research project entitled “Improvement of accuracy of neutron-induced fission reaction data for MAs” is currently ongoing, which...
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Paweł Wakuluk (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland)15/06/2026, 13:10Poster Presentations
The construction of nuclear level schemes from γ-ray spectroscopy data is a long-standing and computationally challenging problem, especially for complex nuclei with a large number of observed transitions. Despite its fundamental importance for the interpretation of nuclear structure experiments, only a limited number of dedicated algorithmic approaches have been proposed [1,2], leaving...
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Paweł Wakuluk (Faculty of Physics, University of Warsaw, PL 02-093 Warsaw, Poland)15/06/2026, 13:10Poster Presentations
The determination of $\beta$-feeding values from $\gamma$-ray spectroscopy data is a fundamental step in constructing reliable nuclear decay schemes and extracting log ft values. In the standard approach, absolute $\gamma$-ray intensities are determined and the population of each excited level is obtained from the intensity balance between $\gamma$ transitions feeding and depopulating that...
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Stefan Frauendorf (University Notre Dame)15/06/2026, 13:10Poster Presentations
The nuclides for which extended sets of E2 matrix elements have been measured by means of COULEX experiments have been studied in the framework of the triaxial projected shell model (TPSM).
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The study encompasses: $_{~~~~~~~~~32}^{70,72,74}$Ge$_{38,40,42}$, $_{~~~~~~~~~~~~~~~34}^{76,78,80,82}$Se$_{42,44,46,48}$, $_{42}^{100}$Mo$_{58}$, $_{44}^{104}$Ru$_{60}$,...
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