Extraction of Gamow-Teller Strength via the (d,<sup>2</sup>He) Reaction in Inverse Kinematics
ORAL
Abstract
Electron-capture (EC) rates play a decisive role in core-collapse and thermonuclear supernovae, the crust of accreting neutron stars in binary systems, and the final core evolution of intermediate mass stars. Charge-exchange reactions (CERs) at intermediate energies (~100 MeV) are crucial in extracting information for neutron-rich nuclei as the EC Q-values are positive for such nuclei. The differential cross-sections in CERs at zero momentum transfer are proportional to the Gamow-Teller strength, B(GT), from which the EC rates can be calculated. In a first of a kind experiment, the S800 spectrometer at National Superconducting Cyclotron Laboratory (NSCL) along with Active-Target Time Projection Chamber (AT-TPC) setup was used to run an experiment with (d,2He) probe in inverse kinematics to study unstable nuclei. Data from the experiment for the 13N(d,2He)13C reaction is being analyzed to extract the differential cross-section for ground and excited states which will be utilized in measuring the B(GT).
*This work is supported by the National Science Foundation PHY-1913554, "Windows on the Universe: Nuclear Astrophysics at the NSCL"
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Presenters
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Zarif M Rahman
- Michigan State University