Journal ArticleDOI
Lowest lying 2 + and 3 - vibrational states in Pb, Sn, and Ni isotopes in relativistic quasiparticle random-phase approximation
A. Ansari,P. Ring +1 more
TLDR
In this article, the excitation energies and electric multipole decay rates of the lowest lying 2{sup +} and 3{sup -} vibrational states in Pb, Sn, and Ni nuclei are calculated following relativistic quasiparticle random-phase approximation formalism based on the relativistically Hartree-Bogoliubov mean field.Abstract:
The excitation energies and electric multipole decay rates of the lowest lying 2{sup +} and 3{sup -} vibrational states in Pb, Sn, and Ni nuclei are calculated following relativistic quasiparticle random-phase approximation formalism based on the relativistic Hartree-Bogoliubov mean field. Two sets of Lagrangian parameters, NL1 and NL3, are used to investigate the effect of the nuclear force. Overall there is good agreement with the available experimental data for a wide range of mass numbers considered here, and the NL3 set seems to be a better choice. However, strictly speaking, these studies point toward the need of a new set of force parameters that could produce more realistic single-particle levels, at least in vicinity of the Fermi surface, of a wide range of nuclear masses.read more
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Journal ArticleDOI
Covariant density functional theory for magnetic rotation
TL;DR: In this article, a computer code based on these symmetries is developed, and first applications are discussed for the nucleus (142)Gd: the rotational band based on the configuration pi h(11/2)(2) circle times nu h( 11/2)-2 is investigated in a fully microscopic and selfconsistent way.
Journal ArticleDOI
Nucleon-pair approximation to the nuclear shell model
Y. M. Zhao,A. Arima +1 more
TL;DR: The nucleon-pair approximation provides an efficient truncation scheme of the full-shell model configurations which are otherwise too large to handle for medium and heavy nuclei in foreseeable future.
Journal ArticleDOI
Evidence for reduced collectivity around the neutron mid-shell in the stable even-mass Sn isotopes from new lifetime measurements
A. Jungclaus,J. Walker,J. Walker,J. Leske,K.-H. Speidel,Andrew Stuchbery,Michael East,P. Boutachkov,Joakim Cederkäll,P. Doornenbal,J. L. Egido,Andreas Ekström,J. Gerl,R. Gernhäuser,N. Goel,M. Górska,I. Kojouharov,P. Maier-Komor,V. Modamio,V. Modamio,F. Naqvi,Norbert Pietralla,S. Pietri,W. Prokopowicz,H. Schaffner,Ronald Schwengner,H. J. Wollersheim +26 more
TL;DR: In this paper, the lifetimes of the first excited 2(+) states in the stable even-A Sn isotopes Sn112-124 have been performed using the Doppler shift attenuation technique.
Journal ArticleDOI
Enhanced Quadrupole and Octupole Strength in Doubly Magic Sn-132
D. Rosiak,M. Seidlitz,P. Reiter,H. Naïdja,H. Naïdja,Yusuke Tsunoda,Tomoaki Togashi,F. Nowacki,F. Nowacki,Takaharu Otsuka,Gianluca Colò,K. Arnswald,T. Berry,A. Blazhev,María José García Borge,Joakim Cederkäll,Daniel Cox,Daniel Cox,H. De Witte,Liam Gaffney,C. Henrich,R. Hirsch,Marc Huyse,A. Illana,Karl Johnston,L. Kaya,Th. Kröll,M L Lozano Benito,J. Ojala,J. Ojala,Janne Pakarinen,Janne Pakarinen,M. Queiser,G. Rainovski,Jose Rodriguez,B. Siebeck,E. Siesling,J. Snäll,P. Van Duppen,A. Vogt,M. von Schmid,N. Warr,F. Wenander,K. O. Zell,Miniball,Hie-Isolde Collaborations +45 more
TL;DR: The presented results of experiment and theory can be considered to be the first direct verification of the sphericity and double magicity of ^{132}Sn.
Journal ArticleDOI
Enhanced collectivity in neutron-deficient Sn isotopes in energy functional based collective Hamiltonian
TL;DR: In this paper, the low-lying collective states in Sn isotopes are studied by a five-dimensional collective Hamiltonian with parameters determined from the triaxial relativistic mean-field calculations using the PC-PK1 energy density functional.
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