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Title: Nuclear isomers: structures and applications

Abstract

Isomeric states in the nuclei along the rapid proton capture process path are studied by the projected shell model. Emphasis is given to two waiting point nuclei 68Se and 72Kr that are characterized by shape coexistence. Energy surface calculations indicate that the ground state of these nuclei corresponds to an oblate-deformed minimum, while the lowest state at the prolate-deformed minimum can be considered as a shape isomer. Due to occupation of the orbitals with large K-components, states built upon two-quasiparticle excitations at the oblate-deformed minimum may form high K-isomers. The impact of the isomer states on isotopic abundance in X-ray bursts is studied in a multi-mass-zone X-ray burst model by assuming an upper-lower limit approach.

Authors:
; ; ;  [1];  [2]
  1. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46545 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20798287
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 819; Journal Issue: 1; Conference: 12. international symposium on capture gamma-ray spectroscopy and related topics, Notre Dame, IN (United States), 4-9 Sep 2005; Other Information: DOI: 10.1063/1.2187858; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CAPTURE; COSMIC X-RAY BURSTS; ELEMENT ABUNDANCE; EXCITATION; GROUND STATES; ISOMERIC NUCLEI; KRYPTON 72; PROTONS; SELENIUM 68; SHELL MODELS; X RADIATION

Citation Formats

Sun Yang, Wiescher, Michael, Aprahamian, Ani, Fisker, Jacob, and Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46545. Nuclear isomers: structures and applications. United States: N. p., 2006. Web. doi:10.1063/1.2187858.
Sun Yang, Wiescher, Michael, Aprahamian, Ani, Fisker, Jacob, & Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46545. Nuclear isomers: structures and applications. United States. doi:10.1063/1.2187858.
Sun Yang, Wiescher, Michael, Aprahamian, Ani, Fisker, Jacob, and Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46545. Mon . "Nuclear isomers: structures and applications". United States. doi:10.1063/1.2187858.
@article{osti_20798287,
title = {Nuclear isomers: structures and applications},
author = {Sun Yang and Wiescher, Michael and Aprahamian, Ani and Fisker, Jacob and Joint Institute for Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46545},
abstractNote = {Isomeric states in the nuclei along the rapid proton capture process path are studied by the projected shell model. Emphasis is given to two waiting point nuclei 68Se and 72Kr that are characterized by shape coexistence. Energy surface calculations indicate that the ground state of these nuclei corresponds to an oblate-deformed minimum, while the lowest state at the prolate-deformed minimum can be considered as a shape isomer. Due to occupation of the orbitals with large K-components, states built upon two-quasiparticle excitations at the oblate-deformed minimum may form high K-isomers. The impact of the isomer states on isotopic abundance in X-ray bursts is studied in a multi-mass-zone X-ray burst model by assuming an upper-lower limit approach.},
doi = {10.1063/1.2187858},
journal = {AIP Conference Proceedings},
number = 1,
volume = 819,
place = {United States},
year = {Mon Mar 13 00:00:00 EST 2006},
month = {Mon Mar 13 00:00:00 EST 2006}
}