Conveners
Afternoon session
- Luna Pellegri
Afternoon session
- Stephane Goriely
Afternoon session
- Stephane Hilaire (CEA, DAM, DIF)
Afternoon session
- Alexander Voinov (Ohio University)
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Mhlangano Freedom Nkalanga (University of Johannesburg)18/05/2026, 14:30Oral
We present the first implementation of the Shape method in inverse kinematics. Traditionally, the Shape method relies on identifiable diagonals in the first generation matrix to extract the shape of the gamma-ray strength function. Our results show that the method works even if no clear diagonals are not identified. We also applied for the first time the Shape method to extract the gamma-ray...
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Manu Kanerva (University of Jyväskylä)18/05/2026, 14:50Oral
Reflection-symmetry-breaking nuclear octupole deformation is a phenomenon of significant interest due to its connection with fundamental symmetry considerations ($\mathcal{C}$, $\mathcal{P}$, and $\mathcal{T}$) and its relevance in nuclear structure studies. Substantial experimental evidence indicates that a few nuclei exhibit a pear-like octupole deformation [1], whereas global theoretical...
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Peter von Neumann-Cosel18/05/2026, 15:10Oral
Oslo method and neutron-capture $\gamma$ decay experimenents on heavy deformed nuclei systematically show a resonance-like structure around 2 - 3 MeV in the gamma strength function (GSF) interpreted as the scissors mode in the quasicontinuum. Its $M1$ character has been demonstrated by polarization experiments [1] and its strength may be connected to the low-energy enhancement phenomeon in...
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18/05/2026, 15:30Oral
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Sivahami Uthayakumaar (Michigan State University / FRIB)19/05/2026, 14:30Oral
How elements beyond Fe are produced in stars continues to be an open question in nuclear astrophysics. Traditionally, two main pathways along the neutron-rich side of the chart of nuclides were shown to explain heavy element nucleosynthesis: the slow (s-) and rapid (r-) neutron capture processes. However, in recent astronomical observations, especially in Carbon-Enhanced Metal Poor (CEMP)...
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Johann Isaak19/05/2026, 15:00Oral
Nuclear level densities (NLDs) are fundamental for describing statistical properties of atomic nuclei and play a central role in nuclear structure and reaction studies as well as in nucleosynthesis calculations.
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In this work, we present the determination of the NLDs for the even tin isotopes $^{116,118,120}$Sn. High-resolution nuclear spectra from $(d,p\gamma)$ reactions, measured with the... -
Justin Loring (University of Tennessee Knoxville)19/05/2026, 15:30Oral
In this work, we compare the performance of three well-known phenomenological nuclear level density models for cross-section evaluations in the unresolved resonance region. Phenomenological model parameters are optimized by using least-squares analysis to simultaneously fit level density, cross-section, neutron strength, and capture width data from the EXFOR and ENSDF databases. Calculations...
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Hannah Berg19/05/2026, 15:50Oral
In this talk we present the extracted nuclear level density, and $\gamma$-strength function for $^{133}$Xe using the inverse-Oslo method. These are the first statistical properties extracted below 6 MeV for any xenon isotope. The experiment was performed in inverse-kinematics at iThemba LABS with an annular particle telescope and a scintillator array consisting of LaBr$_3$ and BGO-shielded...
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Dallas DeMartini (Yale University / Brookhaven National Laboratory)20/05/2026, 14:30Oral
Actinides are of great interest in astrophysics and in technology applications since
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they can fission. However, the microscopic calculation of their statistical properties
presents a major theoretical challenge. The configuration-interaction (CI) shell-
model is a suitable framework to calculate these properties but the required model
spaces are much too large for conventional... -
Luna Pellegri (University of the Witwatersrand)20/05/2026, 14:50Oral
The electric-dipole (E1) strength plays a central role in understanding photoabsorption reactions, offering insights into nuclear structure, collective excitations, and the nuclear response to external fields. While E1 strength has been extensively investigated in heavy nuclei (A > 90)—where shell effects and nucleon correlations are less pronounced—the situation is more complex for lighter...
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Marc Heumüller (Institut für Kernphysik, TU Darmstadt)20/05/2026, 15:20Oral
The giant dipole resonance (GDR) represents one of the most fundamental nuclear excitations and dominates the photoresponse of virtually all nuclei. Its geometrical viewing is an isovector oscillation of the proton against the neutron body. This model also provides predictions for the $\gamma$-decay behavior of the GDR in elastic photon and $2^+_1$ Raman scattering reactions.
To rigorously...
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Yusuke Irie (The University of Osaka)20/05/2026, 15:40Oral
The PANDORA experiment, conducted in October last year in RCNP, delves into photo-nuclear reactions within the mass region below A ∼ 56. This project aims to unravel the energy loss process of ultra-high-energy cosmic rays (UHECRs) during inter-galactic propagation. The origin, acceleration mechanism, and composition of UHECRs remain mysteries. Nonetheless, cosmic-ray air-shower observatories...
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Aaina Thapa (Lawrence Livermore national Laboratory)22/05/2026, 14:30Oral
The surrogate reaction method offers a powerful alternative to direct measurements of compound nuclear reaction cross sections but relies critically on theory developments for modeling the surrogate reaction used to populate the compound nucleus of interest. In this talk, I will present recent theoretical extensions for proton inelastic scattering and (d,p) surrogate reactions. This includes...
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16. The measurement of gamma-decay in photo-nuclear reaction on 12C、13C、27Al for the PANDORA projectYumaro Suzuki (RCNP, The University of Osaka)22/05/2026, 15:00Oral
Photo-nuclear reaction on light nuclei (A<60) is important to understand extragalactic propagation of cosmic-rays with energy greater than 1018 eV, but theoretical models of photo-nuclear reactions on these nuclei have been facing challenges due to lack of experimental data. PANDORA project aims at extracting these data such as photo-absorption cross section, E1 strength and branching ratios...
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Austin Rambo (Ohio University)22/05/2026, 15:20Oral
Measuring the $^{135}$Xe neutron-capture cross section ($^{135}$Xe($n,\gamma$)$^{136}$Xe) has been identified as a top priority for its role in reactor design, stockpile stewardship, nonproliferation, and astrophysics [1]. Current cross section data does not extend above thermal neutron energies and data evaluations differ by an order of magnitude. Performing direct neutron-capture...
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Andrew Voyles22/05/2026, 15:40Oral
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Satabdi Mondal (Department of Physics, Bankura University, PIN - 722155, West Bengal, India)Oral
In recent years, nuclear thermodynamics has become a prominent area of study, various temperature-dependent nuclear properties, such as the shapes of nuclei, widths of giant dipole resonances, and their fluctuation characteristics have been studied. In this context, a particularly intriguing focus lies in the intricate phase transitions occurring within atomic nuclei. In macroscopic...
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