Seminar Details

Carbon-Carbon Fusion Reactions in Neutron Stars

Ernst Rehm, Argonne National Laboratory (ANL)
Wednesday, November 13, 4:10 PM - Nuclear Science Seminar
NSCL Lecture Hall

The fusion of neutron-rich carbon, oxygen or neon isotopes plays an important role for the explanation of the so-called X-ray superbursts which occur in the carbon-enriched outer layers of accreting neutron stars. While measurements of many of the critical fusion reactions (e.g. 24C + 24C) are outside today’s experimental capabilities, some systems closer to the valley of stability can already be measured using existing technologies. In this contribution I will report on measurements of the fusion cross sections of 10,12,13,14,15C on 12C with an active target-detector system consisting of a methane-filled Multi-Sampling Ionization Chamber (MUSIC) and stable and radioactive beams obtained from the Argonne In-flight facility. The principle of this detector will be described and experimental results and comparisons with theoretical predictions will be discussed. This work was supported by the US Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357.