סמינר ארצי בפיזיקה גרעינית

PROGRAM

14:45 - 15:00  Refreshments

15:00 - 16:00  "Search for Time-Reversal-Violation in atom traps", Danny Ashery, Tel Aviv University

Abstract: Several ways to search for time-reversal-violation in beta decay of trapped nuclei will be reviewed. The newly upgraded TRINAT trap system will be described showing the high sensitivity required for such a search.  The experimental plans for such experiments will be described.

16:00 - 16:30 Coffee Break

16:30 - 17:30  "The Curious Case of Tantalum 180", Naftali Auerbach, Tel Aviv University

Abstract: The Ta 180m nucleus is the rarest naturally occurring isotope. It exists in an isomeric state with half-life time of 1.2 10**15 years, at an excitation energy of 77 keV and spin J=9. We study the possibility that when irradiated by gamma rays or subjected to Coulomb excitation its decay can be accelerated by the existence of a doorway. We describe the mechanism of such a decay similar to the chaos-assisted tunneling.