A model of neutron capture and deuteron stripping on deformed nuclei

TORUS Collaboration

A model of neutron capture and deuteron stripping on deformed nuclei

TORUS Collaboration

Nuclear Data

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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 ^{40,42,44,46,48}Ca. 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
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

Conference

Conference	14th International Conference on Nuclear Reaction Mechanisms, NRM 2015
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.

Funders	Funder number
DOE Public Access Plan
LLC	DE-AC05-00OR22725
US Department of Energy Topical Collaboration TORUS
UT Battelle LLC
UT-Battelle
U.S. Department of Energy
Lawrence Livermore National Laboratory	DE-AC52-07NA27344
Michigan State University	DE-SC0004084
Ohio University	DE-SC0004087

Cite this

TORUS Collaboration (2015). A model of neutron capture and deuteron stripping on deformed nuclei. In F. Cerutti, M. Chadwick, A. Ferrari, T. Kawano, & P. Schoofs (Eds.), Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015 (pp. 175-180). (Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015). CERN.

TORUS Collaboration. / A model of neutron capture and deuteron stripping on deformed nuclei. Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015. editor / Francesco Cerutti ; Mark Chadwick ; Alfredo Ferrari ; Toshihiko Kawano ; P. Schoofs. CERN, 2015. pp. 175-180 (Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015).

@inproceedings{739dca4f30f34b3bb531c9557123ae04,

title = "A model of neutron capture and deuteron stripping on deformed nuclei",

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.",

author = "{TORUS Collaboration} and G. Arbanas and Thompson, {I. J.} and Escher, {J. E.} and Ch Elster and Nunes, {F. M.} and Zhang, {S. S.}",

note = "Publisher Copyright: {\textcopyright} 2015, CERN. All rights reserved.; 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015 ; Conference date: 15-06-2015 Through 19-06-2015",

year = "2015",

language = "English",

series = "Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015",

publisher = "CERN",

pages = "175--180",

editor = "Francesco Cerutti and Mark Chadwick and Alfredo Ferrari and Toshihiko Kawano and P. Schoofs",

booktitle = "Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015",

}

TORUS Collaboration 2015, A model of neutron capture and deuteron stripping on deformed nuclei. in F Cerutti, M Chadwick, A Ferrari, T Kawano & P Schoofs (eds), Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015. Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015, CERN, pp. 175-180, 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015, Varenna, Italy, 06/15/15.

A model of neutron capture and deuteron stripping on deformed nuclei. / TORUS Collaboration.
Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015. ed. / Francesco Cerutti; Mark Chadwick; Alfredo Ferrari; Toshihiko Kawano; P. Schoofs. CERN, 2015. p. 175-180 (Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Arbanas, G.

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AU - Escher, J. E.

AU - Elster, Ch

AU - Nunes, F. M.

AU - Zhang, S. S.

PY - 2015

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N2 - 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.

AB - 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.

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M3 - Conference contribution

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BT - Proceedings of the 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015

A2 - Cerutti, Francesco

A2 - Chadwick, Mark

A2 - Ferrari, Alfredo

A2 - Kawano, Toshihiko

A2 - Schoofs, P.

PB - CERN

T2 - 14th International Conference on Nuclear Reaction Mechanisms, NRM 2015

Y2 - 15 June 2015 through 19 June 2015

ER -

A model of neutron capture and deuteron stripping on deformed nuclei

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