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Title: Relativistic Coulomb excitation within the time dependent superfluid local density approximation

Abstract

Within the framework of the unrestricted time-dependent density functional theory, we present for the first time an analysis of the relativistic Coulomb excitation of the heavy deformed open shell nucleus 238U. The approach is based on the superfluid local density approximation formulated on a spatial lattice that can take into account coupling to the continuum, enabling self-consistent studies of superfluid dynamics of any nuclear shape. We compute the energy deposited in the target nucleus as a function of the impact parameter, finding it to be significantly larger than the estimate using the Goldhaber-Teller model. The isovector giant dipole resonance, the dipole pygmy resonance, and giant quadrupole modes are excited during the process. As a result, the one-body dissipation of collective dipole modes is shown to lead a damping width Γ↓≈0.4 MeV and the number of preequilibrium neutrons emitted has been quantified.

Authors:
 [1];  [2];  [3];  [4];  [5]
+ Show Author Affiliations
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Texas A & M Univ. - Commerce, Commerce, TX (United States)
  3. Univ. of Washington, Seattle, WA (United States)
  4. Univ. of Washington, Seattle, WA (United States); Warsaw Univ. of Technology, Warsaw (Poland)
  5. Univ. of Washington, Seattle, WA (United States); Pacific Northwest National Lab., Richland, WA (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
OSTI Identifier:
1227729
Alternate Identifier(s):
OSTI ID: 1180735
Report Number(s):
LA-UR-14-21210
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
FC02-07ER41457; FG02-08ER41533; PHY1415656; DEC-2013/08/A/ST3/00708; AC52-06NA25396; AC02-05CH11231; AC05-00OR22725; PHY0922770; 58202; PHY-0922770
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 114; Journal Issue: 1; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Stetcu, I., Bertulani, C. A., Bulgac, A., Magierski, P., and Roche, K. J. Relativistic Coulomb excitation within the time dependent superfluid local density approximation. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.114.012701.
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Stetcu, I., Bertulani, C. A., Bulgac, A., Magierski, P., & Roche, K. J. Relativistic Coulomb excitation within the time dependent superfluid local density approximation. United States. https://doi.org/10.1103/PhysRevLett.114.012701
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Stetcu, I., Bertulani, C. A., Bulgac, A., Magierski, P., and Roche, K. J. Tue . "Relativistic Coulomb excitation within the time dependent superfluid local density approximation". United States. https://doi.org/10.1103/PhysRevLett.114.012701. https://www.osti.gov/servlets/purl/1227729.
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@article{osti_1227729,
title = {Relativistic Coulomb excitation within the time dependent superfluid local density approximation},
author = {Stetcu, I. and Bertulani, C. A. and Bulgac, A. and Magierski, P. and Roche, K. J.},
abstractNote = {Within the framework of the unrestricted time-dependent density functional theory, we present for the first time an analysis of the relativistic Coulomb excitation of the heavy deformed open shell nucleus 238U. The approach is based on the superfluid local density approximation formulated on a spatial lattice that can take into account coupling to the continuum, enabling self-consistent studies of superfluid dynamics of any nuclear shape. We compute the energy deposited in the target nucleus as a function of the impact parameter, finding it to be significantly larger than the estimate using the Goldhaber-Teller model. The isovector giant dipole resonance, the dipole pygmy resonance, and giant quadrupole modes are excited during the process. As a result, the one-body dissipation of collective dipole modes is shown to lead a damping width Γ↓≈0.4 MeV and the number of preequilibrium neutrons emitted has been quantified.},
doi = {10.1103/PhysRevLett.114.012701},
journal = {Physical Review Letters},
number = 1,
volume = 114,
place = {United States},
year = {Tue Jan 06 00:00:00 EST 2015},
month = {Tue Jan 06 00:00:00 EST 2015}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1103/PhysRevLett.114.012701
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Isovector giant dipole resonance from the 3D time-dependent density functional theory for superfluid nuclei
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  • Castro, A.; Rubio, A.; Stott, M. J.
  • Canadian Journal of Physics, Vol. 81, Issue 10
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journal, July 2008

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On Nuclear Dipole Vibrations
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