First detection of 18F from the 14N(α , γ) 18F reaction with the St. George recoil mass separator
Abstract
The St. George recoil mass separator at the University of Notre Dame has successfully observed its first recoils from the reaction 14N(α , γ) 18F studied in inverse kinematics. The cross section of this reaction contributes to the abundance of 22Ne which is a neutron source for the s-process in TP-AGB, massive helium burning and carbon burning stars via the 22Ne(α , n) 25Mg reaction. The kinematics and cross section of 14N(α , γ) 18F at low energies make it an ideal candidate for commissioning experiments of St. George and the characterization of the focal plane detector. The St. George ion optics separates the 14N beam and sends the 18F recoils into a particle identification detection system. The identification uses the time-of-flight versus residual energy approach. The particle identification system was developed for the St. George recoil mass separator, in collaboration with Indiana University South Bend. Preliminary results of the first nuclear reaction measured with St. George will be presented.
NSF Grant(PHY-0959816 & PHY-1062819 &PHY-1430152).- Publication:
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APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..DNP.EG009M