Monday, 21 November, 2016

14:30 - 14:45

Refreshments

14:45 - 15:45

"The nuclear contacts and short-range correlations in nuclear systems"

Nir Barnea
Hebrew University of Jerusalem

Abstract: TBD

15:45 - 16:15

16:15 - 17:15

"Nuclear physics with high power lasers at ELI-NP"
Dan Stutman
Extreme Light Infrastructure ‐ Nuclear Physics, Magurele, Romania
Abstract:The Extreme Light Infrastructure Nuclear Physics (ELI-NP) in Romania, will host two world-leading photon facilities: (i) a system of two 10 PW lasers delivering 200 J pulses with 20 fs duration and synchronizable on the fs scale and (ii) a Gamma Beam System (GBS) providing gamma rays with continuously tunable energy in the range from 200 keV to 19.5 MeV, based on Inverse Compton Scattering of laser light pulses on relativistic electron bunches. Eight interaction chambers in separate experimental areas will enable a wide range of nuclear physics experiments, including laser-laser, laser-gamma beam, and gamma beam only based setups.

The extreme light intensity achievable with the 10 PW ELI-NP lasers will enable producing extreme electric fields of over 1015 V/cm, and extreme light pressures of over 1013 bar.  The extreme laser electric field will serve to study strong-field QED phenomena, such as non-linear inverse Compton scattering, radiation reaction, and Breit-Wheeler pair production. The extreme light pressure will enable acceleration of near solid density ion bunches to energies of the order of 10 MeV/nucleon, opening the possibility of producing exotic nuclear reactions, which either require chains of interactions, or have very low cross sections. An example is the production of neutron-rich nuclei around the N=126 waiting point through fission-fusion reactions, for studies of heavy element nucleosynthesis.

The possibility to combine in one experiment the high power laser beams with the gamma beam or with the relativistic electron beam from the GBS linac is another unique feature of the ELI-NP facility. Example of laser-gamma beam experiments envisaged are laser driven production of isomers followed by their photoexcitation with the gamma beam, studies of quantum radiation reaction,  and pair creation in vacuum.

Lastly, the narrow-bandwidthγ,n) and (γ,α) reactions and photofission. The NRF experiments will target nuclei which were are beyond reach nowadays, such as in the actinide region. The PDR and GDR studies will address the problem of nuclear polarizability. The measurements of photonuclear reaction cross sections will be related to nuclear astrophysics reaction networks and to precise measurements of key reactions of nuclear astrophysics interest. The photofission studies will be related to the understanding of the landscape of the potential barriers in the light actinide nuclei.  

 The plans for Day-1 experiments at ELI-NP will also be presented.

LOCATION: The first Nuclear Physics Joint Seminar for 2016 will be held next Monday, Nov 21st. at the Weizmann Institute. The seminar will take place in the large seminar room of the Physics building.