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Title: Symmetry-guided large-scale shell-model theory

Authors:
; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1324357
Grant/Contract Number:
SC0005248
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Progress in Particle and Nuclear Physics
Additional Journal Information:
Journal Volume: 89; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-10-06 09:22:14; Journal ID: ISSN 0146-6410
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Launey, Kristina D., Dytrych, Tomas, and Draayer, Jerry P. Symmetry-guided large-scale shell-model theory. United Kingdom: N. p., 2016. Web. doi:10.1016/j.ppnp.2016.02.001.
Launey, Kristina D., Dytrych, Tomas, & Draayer, Jerry P. Symmetry-guided large-scale shell-model theory. United Kingdom. doi:10.1016/j.ppnp.2016.02.001.
Launey, Kristina D., Dytrych, Tomas, and Draayer, Jerry P. 2016. "Symmetry-guided large-scale shell-model theory". United Kingdom. doi:10.1016/j.ppnp.2016.02.001.
@article{osti_1324357,
title = {Symmetry-guided large-scale shell-model theory},
author = {Launey, Kristina D. and Dytrych, Tomas and Draayer, Jerry P.},
abstractNote = {},
doi = {10.1016/j.ppnp.2016.02.001},
journal = {Progress in Particle and Nuclear Physics},
number = C,
volume = 89,
place = {United Kingdom},
year = 2016,
month = 7
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.ppnp.2016.02.001

Citation Metrics:
Cited by: 1work
Citation information provided by
Web of Science

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  • Large scale shell-model calculations with an effective interaction derived from the realistic G-matrices were performed for N=80 isotones for which so-called mixed-symmetry states were recently observed experimentally. Calculated spectra are shown to be in good agreement with data. The calculated transition rates reveal the necessity of modifying the strength of the pairing interaction. The structure of mixed-symmetry 2{sup +} states is analyzed in terms of seniority components and by decomposition into the Q-phonon scheme.
  • Results are presented of shell-model calculations for even and odd parity states in nuclei in the mass region A = 36 through A = 39. In the model space used particles in the 2s/sub 1/2/, 1d/sub 3/2/, 1f/sub 7/2/, and 2p/sub 3/2/ shells have been treated as active. The model space was truncated by a new method of diagonal percentage truncation. An effective Hamiltonian was employed, calculated by fitting to the binding energies of a number of reference levels. The calculated level schemes are compared with experimental data and discussed. The calculations yield good agreement with known data. Several fpmore » intruder states are located. On the basis of the calculations several predictions of angular momenta and parity of observed states have been made, as well as predictions of the excitation of not yet observed yrast states.« less
  • The general principles of the shell model are reviewed and calculations are carried out for nuclei in the A=17--39 region with /sup 23/Na considered in some detail. (AIP)
  • An extensive large-scale shell-model study is conducted for unstable nuclei around N = 20 and N = 28, aiming to investigate how the shell structure evolves from stable to unstable nuclei and affects the nuclear structure. The structure around N = 20 including the disappearance of the magic number is reproduced systematically, exemplified in the systematics of the electromagnetic moments in the Na isotope chain. As a key ingredient dominating the structure/shell evolution in the exotic nuclei from a general viewpoint, we pay attention to the tensor force. Including a proper strength of the tensor force in the effective interaction,more » we successfully reproduce the proton shell evolution ranging from N = 20 to 28 without any arbitrary modifications in the interaction and predict the ground state of 42Si to contain a large deformed component.« less