Journal
PHYSICAL REVIEW C
Volume 105, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.105.064307
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Funding
- U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-AC02-06CH11357, DE-AC0500OR22725, DE-SC0020451, DE-FG02-96ER40978]
- U.K. Science and Technology Facilities Council [ST/P004423/1, ST/T004797/1]
- National Science Foundation [PHY-2012522]
- Hirose International Scholarship Foundation from Japan
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The isomeric state of 16N, a neutron-halo state, was studied using the 16Ng,m(d,3He) proton-removal reactions. The relative spectroscopic factors were extracted using a distorted-wave Born approximation approach, and the effects of weak binding were taken into account using a Woods-Saxon potential model.
The isomeric state of 16N was studied using the 16Ng,m(d,3He) proton-removal reactions at 11.8 MeV/u in inverse kinematics. The 16N beam, of which 24% was in the isomeric state, was produced using the Argonne Tandem-Linac Accelerator System (ATLAS) in-flight system and delivered to the Helical Orbit Spectrometer (HELIOS), which was used to analyze the 3He ions from the (d,3He) reactions. The simultaneous measurement of reactions on both the ground state and the isomeric states, reduced the systematic uncertainties from the experiment and in the analysis. A direct and reliable extraction of the relative spectroscopic factors was made based on a distorted-wave Born approximation approach. The experimental results suggest that the isomeric state of 16N is an excited neutron-halo state. The results can be understood through calculations using a Woods-Saxon potential model, which captures the effects of weak binding.
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