Svenskt kärnfysikermöte 2024

Contribution List

4. Welcome

Andrea Idini

30/10/2024, 13:30

6. Recent highlights from the BESIII experiment

Karin Schönning (Uppsala universitet)

30/10/2024, 13:40

The Beijing Spectrometer (BESIII) at the Beijing Electron-Positron Collider (BEPC-II) is a multi-purpose hadron physics experiment optimized in the tau-charm energy region. Its world-record samples of vector charmonia such as J/Psi, Psi(3686) and Psi(3773), as well as energy scans between 2.0 GeV and 4.95 GeV have opened new avenues in hadron spectroscopy and structure. Furthermore, recently...

7. Λ-Λ hyperons: journey towards the understanding of the hyperon-hyperon interactions in neutron stars

Gandharva Appagere (Stockholms Universitet)

30/10/2024, 14:00

For the P̄ANDA@HADES collaboration Hyperons, baryons incorporating at least one strange quark in the composite, are the focus of research due to several physics interests. A particularly exciting area is the investigation of interactions between hyperons, which could offer insights into the nature of hyperonization and matter in extreme conditions such as neutron star cores [1]. Hyperons,...

8. Wavefunctions of deformed nuclei in the collective space

Erik Kronkvist (Lund University, LTH), Filip Agert (Lund University, LTH)

30/10/2024, 14:20

5. Hyperons in neutron stars and mergers

30/10/2024, 15:10

10. Advancements in Hyperon Tracking with the PANDA Detector Using Geometric Deep Learning

Nikolai in der Wiesche (Uppsala University / University of Münster)

30/10/2024, 15:50

Due to their comparatively long lifetimes, hyperons decay at macroscopic distances from the primary interaction point in particle collider experiments. Because of these displaced decay vertices, the efficient and accurate reconstruction of their daughter particles has remained a long-standing challenge. In a previous work, geometric deep learning was successfully used to reconstruct simulated...

19. Chiral Lagrangians at Higher Orders

Johan Bijnens

30/10/2024, 16:10

In recent years new technologies in producing Lagrangians in Effective Field Theory at higher orders have become available. I will present the techniques used and an overview of recent results.

11. Radiation Detection in the environment and elsewhere - with a salty touch

Christian Bernhardsson (Lund University, Medical Radiation Physics Malmö)

31/10/2024, 09:00

12. SMRs - What will the impact be on global 3H and  14C emissions?

Simon Brandt (Lund University)

31/10/2024, 09:40

13. Radiocarbon in Swedish coastal waters

Kristina Stenström (Lunds universitet)

31/10/2024, 10:00

14. Non-linear time-dependent modelling of heterogeneous nuclear reactors

Fredrik Öhrlund (Lund University)

31/10/2024, 10:50

15. Theoretical study on physiochemical properties and dispersion of radioactive particles/aerosols and their effect on minimum detectable dose in exposed humans for European Spallation Source releases

Belikse Ramljak (Lund University)

31/10/2024, 11:10

The European Spallation Source (ESS) is a neutron facility under construction near Lund, Sweden. The facility will produce neutrons via proton-induced spallation reactions for various scientific applications. Under normal operation, many radionuclides will be produced and contained inside the tungsten target. However, in the scenario of the loss of coolant, it is predicted that these...

16. Developments of neutron-gamma emission tomography for radioactive waste characterization

Rafael Escudeiro (KTH Royal Institute of Technology)

31/10/2024, 11:30

The capability to detect and accurately localize special nuclear materials (SNM) or other actinide materials is crucial for various nuclear security and safeguards applications including the management of radioactive waste. The Neutron-Gamma Emission Tomography (NGET) technique enables rapid detection and precise location of fissile materials by correlating the energy and the time of the...

21. Teaching advanced courses in a sustainable manner – example from the GRE@T-PIONEeR project

Christophe Demaziere (Chalmers University of Technology)

31/10/2024, 13:00

22. Modelling fission particle evaporation using TALYS

Ali Al-Adili (Uppsala University)

31/10/2024, 13:40

23. Local Bayesian mixture of different occupations for nuclear mass predictions

Melvin Storbacka (KTH Royal Institute of Technology)

31/10/2024, 14:00

Theoretically modelling ground-state properties across the nuclear chart remains an elusive task. While modern theoretical frameworks can predict nuclear masses with root mean square deviation below 600 keV in comparison to experimental data, recent Bayesian model averaging approaches present statistical frameworks to significantly decrease the rms. These Bayesian approaches also provide...

24. The beta-decay properties of N=Z nuclei: Role of neutron-proton pairing and the shell model interpretation

Priyanka Choudhary (KTH Royal Institute of Technology)

31/10/2024, 14:20

We have done a systematic beta-decay study of the even-even nuclei A=58,62,66, and 70 into N=Z odd-odd nuclei using the large-scale shell model. It was reported that the enhancement in GT transition strength in 70Br compared to the beta-decay of lighter 62Ge might be an indication of increased neutron-proton pairing correlation. To explore the np correlation in nuclei, we have employed an...

17. Modeling of fission-fragment charge and istotopic distributions

Peter Möller (Lund University)

31/10/2024, 15:10

18. Formation of heavy elements in drift plus diffusion dynamics

Martin Albertsson (Lund university / Lawrence Berkeley National Laboratory)

31/10/2024, 15:50

Within the Langevin framework, we investigate the dynamics of the fusion process for production of transfermium elements in reactions with 208Pb target. After the reacting nuclei have made contact, the early dynamical stage is dominated by the dissipation of the initial radial kinetic energy, while the subsequent shape evolution is diffusive. The probability for surmounting the inner barrier...

20. Inclusive cross-section of deformed 24Mg from the Generator Coordinate Method

Jennifer Boström (Lund University)

31/10/2024, 16:10

25. NuPeCC Matters

Prof. Dirk Rudolph (Lund University)

31/10/2024, 16:50

26. Exploring nuclear structures with QFS reactions at R3B

Valerii Panin (GSI, Darmstadt)

01/11/2024, 09:00

27. Characterising a Super Heavy element RECoil detector (SHREC)

Marwan Mohamed (Lund University)

01/11/2024, 09:40

A new focal plane detector system for the Berkeley Gas-filled Separator (BGS) was designed, constructed, and tested offline with various α-decay and conversion-electron sources. The detector for SuperHeavy RECoils (SHREC) aims to identify separated recoiling heavy and superheavy nuclei using their implantation signal as well as their correlated radioactive decay paths. Following a...

28. Isomeric yield ratio measurements in the alpha-particle induced fission of Thorium at 32 MeV

Simone Cannarozzo (Uppsala University)

01/11/2024, 10:00

The mechanism generating fission fragments’ large angular momenta is still a heavily discussed question in nuclear physics. Since they are not directly measurable, experimentally accessible observables are used to derive the angular momenta using nuclear model codes. One of these observables is the yield ratio between spin isomers produced in a fission reaction. For this reason, twenty-one...

29. Imaging the Nuclear Structure in Ultra-Relativistic Nuclear Collisions

You Zhou (Niels Bohr Institute)

01/11/2024, 10:50

30. Anomalous B4/2 ratio in the osmium isotopic chain

Irene Zanon (KTH - Royal Institute of Technology)

01/11/2024, 11:30

Spectroscopic properties of exotic nuclei are powerful tools to obtain a better insight on the evolution of nuclear structure far from the stability. Mid-shell nuclei are expected to exhibit collective behaviour which is typically reflected in the observation of low excitation energies of the first excited states and high transition probabilities. Moreover, the collectivity is expected to...

31. Lifetime measurements in odd-mass tellurium

Ebba Ahlgren Cederlöf (KTH/Uppsala university)

01/11/2024, 11:50

Reduced transition probabilities B(E2) in even-mass tellurium nuclei, accessible experimentally through lifetime measurements, have long been of particular interest in order to study the effect on collectivity when adding two extra protons outside the closed Z=50 shell of Sn. Historically, the main focus has been on the extreme neutron deficient area, close to the neutron shell closure at...

32. Closing Remarks

Andrea Idini

01/11/2024, 12:10