The Institute of Nuclear and Particle Physics (INPP) presents Greg Christian, of Texas A&M, presenting “Nucleosynthesis in the Lab: Direct and Indirect measurements of Resonant Radiative Capture Rates,” on Tuesday, February 7, at at 4 p.m. in Edwards Accelerator Lab, Roger W. Finlay Conference Room.
Abstract: The vast majority of nuclei heavier than hydrogen are formed in stellar environments, through various chains of nuclear reactions and beta decays. The nucleosynthesis sites are many and varied, and they include quiescent stellar burning as well as stellar explosions such as novae, supernovae, and X-ray bursts. Laboratory measurements of key nuclear reaction rates are crucial inputs into nucleosynthesis models which attempt to explain the origin of the elements in the various stellar processes. In this talk, I will discuss an ongoing experimental program aimed at constraining key radiative capture rates important for stellar nucleosynthesis, using both direct and indirect measurement techniques. These measurements touch on a number of different reactions with varied astrophysical motivations, but with a primary focus on classical novae and the S-process in AGB stars. I will also discuss future experimental plans, including anticipated measurements with re-accelerated radioactive beams provided by the light ion guide upgrade to the Texas A&M Cyclotron Institute, as well as detector developments aimed at improving measurements relevant for both nuclear astrophysics and nuclear structure.