학술논문
Study of the Isomeric State in $^{16}$N Using the $^{16}$N$^{g,m}$($d$,$^3$He) Reaction
Document Type
Working Paper
Author
Tang, T. L.; Hoffman, C. R.; Kay, B. P.; Tolstukhin, I. A.; Almaraz-Calderon, S.; Asher, B. W.; Avila, M. L.; Ayyad, Y.; Brown, K. W.; Bazin, D.; Chen, J.; Chipps, K. A.; Copp, P. A.; Hall, M.; Jayatissa, H.; Ong, H. J.; Santiago-Gonzalez, D.; Sharp, D. K.; Song, J.; Stolze, S.; Wilson, G. L.; Wu, J.
Source
Subject
Language
Abstract
The isomeric state of $^{16}$N was studied using the $^{16}$N$^{g,m}$($d$,$^3$He)~proton-removal reactions at \mbox{11.8~MeV/$u$} in inverse kinematics. The $^{16}$N beam, of which 24% was in the isomeric state, was produced using the ATLAS in-fight facility and delivered to the HELIOS spectrometer, which was used to analyze the $^{3}$He ions from the ($d$,$^{3}$He) reactions. The simultaneous measurement of reactions on both the ground and isomeric states, reduced the systematic uncertainties from the experiment and in the analysis. A direct and reliable comparison of the relative spectroscopic factors was made based on a Distorted-Wave Born Approximation approach. The experimental results suggest that the isomeric state of $^{16}$N 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.
Comment: 8 pages, 7 figurs
Comment: 8 pages, 7 figurs