Workshop on HIC Theory

19 Mar 2019, 15:00 → 22 Mar 2019, 17:00 Europe/Oslo

414 (UiO)

Larisa Bravina (University of Oslo (NO))

Mini workshop on the heavy ion collisions theory will be held on 19-22 March 2019 in Oslo (Norway), at the University of Oslo.

Professor and student presentations with wide discussions of hot topics of heavy ion collisions and development of the student projects will take place within that week.

In particular, we plan to discuss: production of hypernuclei, hadronic freeze-out, vorticity and polarisation, anisotropic flow, the spatial sub-separation of strange particles from non-strange particles, induced Surface tension equation of state and radiation dominated implosion with plasmonic nano-shells and flat target.

 

Tuesday 19 March

15:00 → 16:00 Production of hypernuclei in relativistic ion collisions.

The study of hypernuclei produced in relativistic collisions of heavy ions
opens new opportunities for nuclear/particle physics and astrophysics. We
review the main processes leading to the formation of hypernuclei in these
reactions: These are the disintegration of large excited hyper-residues
(target- and projectile-like remnants with captured hyperons), and the
coalescence of hyperons with other baryons into light clusters. We use the
transport, coalescence and statistical models to describe the whole process,
and demonstrate the advantages over the traditional hypernuclear methods:
A broad distribution of predicted hypernuclei in masses and isospin allows
for investigating properties of exotic hypernuclei, as well as the
hypermatter both at high and low temperatures. We point at the abundant
production of multi-strange nuclei and new bound/unbound hypernuclear
states. The realistic estimates of hypernuclei yields in various collisions
are presented. Many processes well known in normal reactions, such as
evaporation, fission, multifragmentation, and Fermi-break-up are generalized
and calculated for the case of excited hypermatter. We demonstrate novel
methods for analysis of hypernuclear data which allow for obtaining info on
exotic hypernuclei. There is a saturation of the hypernuclei production at
high energies, therefore, the optimal way to pursue this experimental
research is to use the accelerator facilities of intermediate energies.

Speaker: Alexander Botvina (FIAS, University of Frankfurt am Main)

Wednesday 20 March

13:00 → 14:00 Radiation dominated implosion with plasmonic nano-shells and flat target

Inertial Confinement Fusion is a promising option to provide massive, clean, and affordable energy for humanity in the future. The present status of research and development is hindered by hydrodynamic instabilities occur- ring at the intense compression of the target fuel by energetic laser beams.
The initial compression of the target can be decreased, not to reach the Rayleigh-Taylor or other instabilities, and a final and more energetic laser pulse can achieve rapid volume ignition, which can be as short as the penetration time of the light across the pellet. The reflectivity of the target can be made negligible in the planned direct drive experiments, and the absorptivity can be increased by one or two orders of magnitude by plasmonic nano-shells embedded in the flat target fuel. Thus, higher ignition temperature and radiation dominated dynamics can be achieved. Here we propose that a short final light pulse can heat the target so that most of the interior will reach the ignition temperature simultaneously based on the results of relativistic fluid dynamics. This makes the development of any kind of instability impossible, which would prevent complete ignition of the target. In the new one-dimensional, two laser driven geometry, after the ignition the DT burn- ing will become faster and more intense than in the present LLNL NIF thermos-nuclear fusion experiments.

Speaker: Laszlo Csernai (Department of Physics and Technology)

Csernai-2019-Hirschegg.pdf

Thursday 21 March

09:30 → 10:00 Induced Surface tension equation of state

Speaker: Mr Yakovenko Nasar

Oslo_Mar_2019)_ISTEoS.pdf

10:00 → 10:30 The spatial sub-separation of strange particles from not strange in heavy-ion collisions at energies of FAIR and NICA

Speaker: Ms Oleksandra Panova (TSNU and UiO)

21_march-3.pdf

10:30 → 11:00 Vorticity and Polarisation in Heavy Ion Collisions

Vorticity and Lambda Polarisation in A+A collisions were calculated in UrQMD model.

Speaker: Mr Oleksandr Vitiuk (Taras Shevchenko National University of Kyiv)

11:00 → 11:30 Development of Anisotropic Flow in Heavy Ion Collisions at BES RHIC energies

Speaker: Mr Kvasiuk Yurii (TSNU and UiO)

Flows in HIC.pdf

Flows in HIC.pptx

11:30 → 12:00 Hadronic Freeze-out in relativistic heavy ion collisions at BES RHIC energies

Speaker: Dmytrii Sachenko (Taras Shevchenko National University of Kyiv)

Oslo_2019_workshop.pdf