Evolution of the Low-lying E1 Strength With Deformation

Journal Article · Wed Aug 26 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3232062· OSTI ID:21344567

Arteaga, D Pena; Khan, E ^[1]; Ring, P ^[2]

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1. Institut de Physique Nucleaire, Universite Paris-Sud, IN2P3-CNRS, F-91406 Orsay Cedex (France)
2. Physikdepartment, Technische Universitaet Muenchen, D-85748, Garching (Germany)

The evolution of low-lying E1 strength is systematically analyzed in very neutron-rich Sn nuclei, beyond {sup 132}Sn until {sup 166}Sn, within the Relativistic Quasiparticle Random Phase Approximation. The great neutron excess favors the appearance of a deformed ground state for {sup 142-162}Sn. The evolution of the low-lying strength in deformed nuclei is determined by the interplay of two factors, isospin asymmetry and deformation: while greater neutron excess increases the total low-lying strength, deformation hinders and spreads it. Very neutron rich deformed nuclei may not be as good candidates as spherical nuclei like {sup 132}Sn for the experimental study of low-lying E1 strength.

• OSTI ID: 21344567
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1165; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
APPROXIMATIONS
ASYMMETRY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCULATION METHODS
DEFORMATION
DEFORMED NUCLEI
E1-TRANSITIONS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
GIANT RESONANCE
GROUND STATES
INTERMEDIATE MASS NUCLEI
ISOSPIN
ISOTOPES
MATTER
MULTIPOLE TRANSITIONS
NEUTRON-RICH ISOTOPES
NUCLEAR DEFORMATION
NUCLEAR MATTER
NUCLEAR STRUCTURE
NUCLEI
OSCILLATOR STRENGTHS
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
RANDOM PHASE APPROXIMATION
RELATIVISTIC RANGE
RESONANCE
SECONDS LIVING RADIOISOTOPES
TIN 132
TIN ISOTOPES