Benchmarking the extraction of statistical neutron capture cross sections on short-lived nuclei
ORAL
Abstract
Neutron-capture rates on short-lived rare isotopes are required input into a number of physical processes; one such example is the astrophysical r-process. The recent LIGO and Virgo gravitational-wave detection of a direct signal from two colliding neutron stars combined with the wealth of follow-up measurements across the electromagnetic spectrum demonstrated that an r-process had occurred during the collision. Despite knowing at least one location for the r-process, many questions remain. The uncertainties in the nuclear physics inputs, such as neutron-capture rates, present a large barrier to accurately model the r-process abundances in large-scale nucleosynthesis calculations. Neutron-capture rates are difficult to measure and theoretical predictions range over orders of magnitude far from stability. The β-Oslo method is an indirect technique to determine neutron-capture rates and the present work will present the results of the 50Ti neutron-capture cross section extracted following the β decay of 51Sc. The inferred cross section will be compared to the directly measured 50Ti neutron capture cross section.
*This work was supported in part by the NSF under PHY-1102511 and PHY-1350234, the NNSA under DE-NA0000979, DE-NA0003180, DE-NA0003221 and DE-NA0002132
–
Presenters
-
Sean N. N. Liddick
- National Superconducting Cyclotron Laboratory, Michigan State University
- National Superconducting Cyclotron Laboratory (NSCL)
- National Superconducting Cyclotron Laboratory
- Michigan State Univ