Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268

Thu., November 06, 2008, at 3:00 p.m. (refreshments at 2:40 p.m.)

A FAIR Chance for Nuclear Astrophysics

Karlheinz Langanke, GSI Darmstadt, Germany
Building 6008 Conference Room

Massive stars end their lives in a supernova explosion triggered by the gravitational collapse of their inner core. Nuclear processes play a crucial role in the explosion, as for example the dynamics of the collapse is greatly determined by weak-interaction processes like electron captures on nuclei and neutrino-induced reactions. Supernovae are also the environment of fast explosive nucleosynthesis. This most likely includes the r-process by which half of the elements heavier than iron are produced. Very recently a novel nucleosynthesis process has been found, named the nu p process. It should occur in each supernova producing medium-mass nuclei and might be the long searched-for origin of the proton-rich Mo and Ru nuclides.