Abstract
A coupled channel model of direct neutron capture and deuteron stripping reactions, which consistently accounts for effects of nuclear deformations in both reactions, is constructed by coupling all incoming and outgoing partitions of both reactions to the same set of collective states. This model is demonstrated using the FRESCO coupled-channels code [I. J. Thompson, Comp. Phys. Rep. 7, 167 (1988)], and it is applied to capture and stripping reactions on even-mass calcium isotopes 40,42,44,46,48Ca. All incoming and outgoing partitions in capture and stripping reactions were coupled to 2+, 4+, and 3- collective states using a consistent set of deformation lengths. Coupling to these collective states significantly decreases the direct capture cross section relative to the capture in a spherical model for the nuclides considered. Similarly, deuteron stripping is approximately cut in half for the same nuclides. These results suggest that single-particle spectroscopic factors used in this model of direct capture ought to be refitted by computing deuteron stripping with coupling to the same collective states.
| Original language | English |
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| Title of host publication | Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015 |
| Editors | Francesco Cerutti, Mark Chadwick, Alfredo Ferrari, Toshihiko Kawano, P. Schoofs |
| Publisher | CERN |
| Pages | 175-180 |
| Number of pages | 6 |
| ISBN (Electronic) | 9789290834182 |
| State | Published - 2015 |
| Event | 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015 - Varenna, Italy Duration: Jun 15 2015 → Jun 19 2015 |
Publication series
| Name | Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015 |
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Conference
| Conference | 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015 |
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| Country/Territory | Italy |
| City | Varenna |
| Period | 06/15/15 → 06/19/15 |
Funding
This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 and Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344 with the U.S. Department of Energy. The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). This work is supported through the US Department of Energy Topical Collaboration TORUS (website www.reactiontheory.org). It is performed under the auspices of DOE by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, by Ohio University under Contract No. DE-SC0004087, under the UT Battelle LLC Contract No. DE-AC05-00OR22725, and by Michigan State University under Contract No. DE-SC0004084.