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Nuclear Seminars 2014 Fall


  Title: The reactions 12C(α,γ)16O and 12C+12C in direct experiments
– Present status and perspectives
  Speaker: Dr. Frank Strieder
  Institute: Ruhr-Universität Bochum, Germany
  Date: Monday, August 18, 2014
  Time: 4:00 - 5:00 pm EST
  Place: Nieuwland Science Hall, Room 124

  Abstract:

The capture reactions 12C(α,γ)16O takes place in the helium burning of Red Giants and the 12C+12C fusion reactions are the main processes in carbon burning of massive stars. These reactions determine not only the nucleosynthesis of elements up to the iron region but also the subsequent evolution of massive stars, the dynamics of a supernova, and the kind of remnant after a supernova explosion. For these reasons, the cross section at the relevant astrophysical energy should be known with a precision of at least 10% for reliable models of late stellar evolution.
In spite of tremendous experimental efforts in measuring this cross section over nearly 40 years, one is still far from this goal. The available experimental data of these two important nuclear processes will be reviewed and open problems, questions, and ambiguities will be discussed. Finally, the prospects for new experiments will be outlined, with particular emphasis on the potentials and challenges of measurements at a future underground accelerator facility.


Topic

Date

Speaker

The reactions 12C(α,γ)16O and 12C+12C
in direct experiments – Present status
and perspectives
August 18 Dr. Frank Strieder
Ruhr-Universität Bochum, Germany
Labor Day September 1
TBA September 15 Prof. Mathew Redshaw
Central Michigan University
Special Nuclear Seminar September 23 Dr. Bruce Remington
Lawrence Livermore National Lab
TBA September 29 Dr. Paul Schaffer
TRIUMF, Canada
Fall Break October 20
TBA November 3 Prof. Graham Peaslee
Hope College, MI
TBA November 10 Dr. Daniel Bemmerer
Helmholtz-Zentrum Dresden-Rossendorf, Germany
TBA November 17 Dr. Alain Lapierre
NSCL/MSU
TBA December 8 Prof. Con Beausang
University of Richmond, VA





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