Quenching of single-particle strength in A = 15 nuclei.
ORAL
Abstract
A simultaneous determination of the occupancy of the 1s and 0d orbitals outside of 14C and 14N has been made via the neutron-adding (d,p) reaction in inverse kinematics using the HELIOS spectrometer at Argonne National Laboratory. Spectroscopic factors for these orbitals are found to be about 0.6 that of the single-particle values, indicating a quenching of single-particle motion consistent with a large body of transfer-reaction data. The magnitude of this quenching and its dependence on ΔS, the difference between proton and neutron separation energies, is inconsistent with that seen in intermediate-energy knockout reactions on complex targets.
*This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Contracts No. DE-AC02-06CH11357 (Argonne), DE-AC02-05CH11231 (Berkeley), and DE-AC05-00OR22725 (Oak Ridge), the International Technology Center Pacific (ITC-PAC) under Contract No. FA520919PA138, the UK Science and Technology Facilities Council Grant No. ST/P004423/1, and the U.S. National Science Foundation (NSF) under Cooperative Agreement No. PHY-1565546. This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User Facility.
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Presenters
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Benjamin P Kay
- Argonne National Laboratory