9th Workshop on Nuclear Level Density and Gamma Strength

Session

Day 1

27 May 2024, 16:00

Auditorium 3 (University of Oslo)

74. Depletion and Activation analysis of the JEEP-I reactor

Tony Skovli

Poster

The energy released from nuclear fission has been harnessed since the 1940s and is a major contributor for power production in many countries around the world today. In total there are 439 operable reactors in the world, as of March 2024, with a total production capacity of almost 400,000 MWe [1]. Countries like the Unites States, China and France are major nuclear electricity producers, and...

4. Development of innovative methods for a fission trigger

Brigitte PERTILLE RITTER (Université Paris-Saclay / IJCLab)

Poster

The FRØZEN project aims to get a better understanding of the angular momentum generation and the energy partition between fragments in the fission process. The reconstruction of the very first moments after the scission point is essential. Correlated neutron and gamma detection as well as measuring kinematic properties of fission fragments is necessary. Such a task could be achieved thanks to...

49. Experimental study of shape transitions in the mass 100 region

Johannes Sørby Heines (Nuclear Physics Group, University of Oslo)

Poster

Nuclear level densities and $\gamma$-ray strength functions serve as input to large scale nuclear models which predict the properties of nuclei across the nuclear chart. The mass 100 region is one of rapid shape transitions, making it a good testing ground for such models. An experiment at GANIL in 2017 used a fusion-fission reaction to produce a ...

71. Intermediate-Energy Coulomb Excitation of 79Ga

Noémie Fritz

Poster

This thesis focuses on examining the Coulomb excitation of the odd-even nucleus $^{79}$Ga to explore its collective behavior. Located near $^{78}$Ni in the mass region, studying $^{79}$Ga provides valuable insights into deviations from traditional shell structure within this mass range. The experimental study took place in 2015 at the Radioactive Ion Beam Factory (RIBF) situated at the RIKEN...

73. Inverse-Oslo method to extract statistical properties of $^{133}$Xe for Nuclear Plasma Interactions

Hannah Berg

Poster

$^{133}$Xe is an interesting case for plasma physics to study the nuclear excitation by electron capture, as the process can be studying using the statistical properties of $^{133}$Xe.
In this work we present results from the inverse-Oslo method on $^{133}$Xe where we extract the nuclear level density and the $\gamma$-strength function, which can be used to calculate the (n,$\gamma$) cross...

78. Investigating shape coexistence in Z≈N A≈70 nuclei using Couloumb excitation of selenium-74

Robin Kjus (CEA Saclay)

Poster

The neutron-deficient selenium and krypton have been observed to exhibit a wide range of shapes which can be linked to large shell gaps. Typically, for even-even nuclei in this region, the ground states are of prolate deformation with oblate states built on a deformed 0+ state. However, certain nuclei, such as krypton-72 and selenium-68, are suggested to have the reverse configuration, i.e....

75. Multi-recycling of Pu in the French nuclear fleet

Gulla Torvund (Student)

Poster

France has a strong tradition for recycling spent nuclear fuels. A goal has been to minimize the build-up of plutonium, which inevitably is a bi-product of uranium fueled water-cooled reactor operation. Despite their efforts into minimization of plutonium through the twice-through fuel cycle strategy and Mixed Oxide (MOX) fuels, their plutonium inventory is steadily increasing. However,...

72. Nuclear excitation function for medical relevant radionuclieds; natZr(d,x)86Y

Elise Malmer Martinsen (Univeristy of Oslo)

Poster

The aim of this work is to measure the nuclear excitation functions for natZr(d,x) reactions for a better characterization of their experimental cross sections. In particular, the possible production pathway for the medical relevant radionuclide 86Y was in focus. 86Y is a positron emitter and can be used in PET-scan and theranostics together with 90Y.

The experiment was conducted at the...

58. Plans to constrain the reactor-relevant $^{135}$Xe(n,$\gamma$) reaction through the beta-Oslo method while benchmarking against surrogate and inverse-Oslo methods at the same time.

Dr Darren Bleuel (Lawrence Livermore National Laboratory)

Poster

The nuclear reactor community has identified measurements of the abnormally-large $(n,\gamma)$ reaction cross section of the unstable fission fragment and reactor poison, $^{135}$Xe, to be of the highest priority due to its large uncertainty at non-thermal energies. This uncertainty is apparent in data evaluations such as ENDF, JEFF, and JENDL, in which not only the evaluations differ from...