Recent direct reaction experimental studies with radioactive tin beams
Abstract
Direct reaction techniques are powerful tools to study the single-particle nature of nuclei. Performing direct reactions on short-lived nuclei requires radioactive ion beams produced either via fragmentation or the Isotope Separation OnLine (ISOL) method. Some of the most interesting regions to study with direct reactions are close to the magic numbers where changes in shell structure can be tracked. These changes can impact the final abundances of explosive nucleosynthesis. The structure of the chain of tin isotopes is strongly influenced by the Z=50 proton shell closure, as well as the neutron shell closures lying in the neutron-rich, N=82, and neutron-deficient, N=50, regions. Here we present two examples of direct reactions on exotic tin isotopes. The first uses a one-neutron transfer reaction and a low-energy reaccelerated ISOL beam to study states in 131Sn from across the N=82 shell closure. The second example utilizes a one-neutron knockout reaction on fragmentation beams of neutron-deficient 106,108Sn. In both cases, measurements of gamma rays in coincidence with charged particles proved to be invaluable.
Cite
@article{arxiv.1508.06531,
title = {Recent direct reaction experimental studies with radioactive tin beams},
author = {K. L. Jones and S. Ahn and J. M. Allmond and A. Ayres and D. W. Bardayan and T. Baugher and D. Bazin and J. S. Berryman and A. Bey and C. Bingham and L. Cartegni and G. Cerizza and K. Y. Chae and J. A. Cizewski and A. Gade and A. Galindo-Uribarri and R. F. Garcia-Ruiz and R. Grzywacz and M. E. Howard and R. L. Kozub and J. F. Liang and B. Manning and M. Matos and S. McDaniel and D. Miller and C. D. Nesaraja and P. D. O'Malley and S. Padgett and E. Padilla-Rodal and S. D. Pain and S. T. Pittman and D. C. Radford and A. Ratkiewicz and K. T. Schmitt and A. Shore and M. S. Smith and D. W. Stracener and S. R. Stroberg and J. Tostevin and R. L. Varner and D. Weisshaar and K. Wimmer and R. Winkler},
journal= {arXiv preprint arXiv:1508.06531},
year = {2015}
}
Comments
11 pages, 5 figures, Zakopane Conference on Nuclear Physics "Extremes of the Nuclear Landscape", Zakopane, Poland, August 31 - September 7, 2014