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Title: Knockout Reactions from p-Shell Nuclei: Tests of Ab Initio Structure Models

Abstract

Absolute cross sections have been determined following single neutron knockout reactions from {sup 10}Be and {sup 10}C at intermediate energy. Nucleon density distributions and bound-state wave function overlaps obtained from both variational Monte Carlo (VMC) and no core shell model (NCSM) ab initio calculations have been incorporated into the theoretical description of knockout reactions. Comparison to experimental cross sections demonstrates that the VMC approach, with the inclusion of 3-body forces, provides the best overall agreement while the NCSM and conventional shell-model calculations both overpredict the cross sections by 20% to 30% for {sup 10}Be and by 40% to 50% for {sup 10}C, respectively. This study gains new insight into the importance of 3-body forces and continuum effects in light nuclei and provides a sensitive technique to assess the accuracy of ab initio calculations for describing these effects.

Authors:
; ; ; ;  [1]; ; ; ; ; ; ; ; ;  [1];  [2];  [3]; ;  [4];  [5]
  1. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
  2. (United States)
  3. Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH (United Kingdom)
  4. Lawrence Livermore National Laboratory, P.O. Box 808, L-414, Livermore, California 94551 (United States)
  5. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
21550322
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 16; Other Information: DOI: 10.1103/PhysRevLett.106.162502; (c) 2011 American Institute of Physics; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ACCURACY; BERYLLIUM 10; BOUND STATE; CARBON 10; CROSS SECTIONS; DENSITY; DISTRIBUTION; KNOCK-OUT REACTIONS; MONTE CARLO METHOD; NEUTRONS; SHELL MODELS; SHELLS; VARIATIONAL METHODS; WAVE FUNCTIONS; ALKALINE EARTH ISOTOPES; BARYONS; BERYLLIUM ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CALCULATION METHODS; CARBON ISOTOPES; DIRECT REACTIONS; ELEMENTARY PARTICLES; EVEN-EVEN NUCLEI; FERMIONS; FUNCTIONS; HADRONS; ISOTOPES; LIGHT NUCLEI; MATHEMATICAL MODELS; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; PHYSICAL PROPERTIES; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; YEARS LIVING RADIOISOTOPES

Citation Formats

Grinyer, G. F., Bazin, D., Adrich, P., Obertelli, A., Weisshaar, D., Gade, A., Bowen, M. D., Brown, B. A., Campbell, C. M., Cook, J. M., Glasmacher, T., McDaniel, S., Siwek, K., Terry, J. R., Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, Tostevin, J. A., Navratil, P., Quaglioni, S., and Wiringa, R. B.. Knockout Reactions from p-Shell Nuclei: Tests of Ab Initio Structure Models. United States: N. p., 2011. Web. doi:10.1103/PHYSREVLETT.106.162502.
Grinyer, G. F., Bazin, D., Adrich, P., Obertelli, A., Weisshaar, D., Gade, A., Bowen, M. D., Brown, B. A., Campbell, C. M., Cook, J. M., Glasmacher, T., McDaniel, S., Siwek, K., Terry, J. R., Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, Tostevin, J. A., Navratil, P., Quaglioni, S., & Wiringa, R. B.. Knockout Reactions from p-Shell Nuclei: Tests of Ab Initio Structure Models. United States. doi:10.1103/PHYSREVLETT.106.162502.
Grinyer, G. F., Bazin, D., Adrich, P., Obertelli, A., Weisshaar, D., Gade, A., Bowen, M. D., Brown, B. A., Campbell, C. M., Cook, J. M., Glasmacher, T., McDaniel, S., Siwek, K., Terry, J. R., Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, Tostevin, J. A., Navratil, P., Quaglioni, S., and Wiringa, R. B.. Fri . "Knockout Reactions from p-Shell Nuclei: Tests of Ab Initio Structure Models". United States. doi:10.1103/PHYSREVLETT.106.162502.
@article{osti_21550322,
title = {Knockout Reactions from p-Shell Nuclei: Tests of Ab Initio Structure Models},
author = {Grinyer, G. F. and Bazin, D. and Adrich, P. and Obertelli, A. and Weisshaar, D. and Gade, A. and Bowen, M. D. and Brown, B. A. and Campbell, C. M. and Cook, J. M. and Glasmacher, T. and McDaniel, S. and Siwek, K. and Terry, J. R. and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 and Tostevin, J. A. and Navratil, P. and Quaglioni, S. and Wiringa, R. B.},
abstractNote = {Absolute cross sections have been determined following single neutron knockout reactions from {sup 10}Be and {sup 10}C at intermediate energy. Nucleon density distributions and bound-state wave function overlaps obtained from both variational Monte Carlo (VMC) and no core shell model (NCSM) ab initio calculations have been incorporated into the theoretical description of knockout reactions. Comparison to experimental cross sections demonstrates that the VMC approach, with the inclusion of 3-body forces, provides the best overall agreement while the NCSM and conventional shell-model calculations both overpredict the cross sections by 20% to 30% for {sup 10}Be and by 40% to 50% for {sup 10}C, respectively. This study gains new insight into the importance of 3-body forces and continuum effects in light nuclei and provides a sensitive technique to assess the accuracy of ab initio calculations for describing these effects.},
doi = {10.1103/PHYSREVLETT.106.162502},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 16,
volume = 106,
place = {United States},
year = {2011},
month = {4}
}