סמינר ארצי בפיזיקה גרעינית

PROGRAM

13:45 - 14:00  Refreshments + Organization

14:00 - 14:15  "In memoriam of Avivi Yavin" - Danny Ashery, Tel Aviv University

14:15 - 15:15  "Neutron star binaries as sources of gravitational waves an heavy r-process material", Tsvi Piran, The Hebrew University of Jerusalem

Abstract:

TBA

15:15 - 15:45 Coffee Break

15:45 - 16:45  "Possible Directions in the Study of Neutron-Rich Exotic Isotopes", Israel Mardor, Soreq Nuclear Research Center

Abstract:

Research of neutron-rich exotic isotopes can generate significant contributions to the understanding of the astrophysical rapid neutron capture process (r-process) of nucleosynthesis, and the extension of nuclear models to regions far from stability. In this talk I present an initiative to start a research program of neutron-rich exotic isotopes in Israel.

In the short term, the plan is to study specific processes and characteristics in relevant facilities in the world. I will discuss medium- and high-energy neutron-induced fission rates and fission products distributions of several actinides, which serve as input to quantify fission recycling in the r-process; and the probabilities of beta-delayed multi-neutron emission (of applicable isotopes), which affect the beta decay chains during "freeze out", thus changing the resulting stable isotopes r-process abundances.

For the longer term, I explore the possibility of constructing a neutron-rich exotic isotopes facility at SARAF Phase II, mainly based on medium- and high-energy induced fission. Neutron induced fission has the advantage of generating isotopes with a higher neutron number, thus extending our reach to regions farther from stability. Preliminary estimations indicate that such a facility will be potent in a world competitive manner.