Isovector giant dipole resonance in hot rotating light nuclei in the calcium region

Journal Article · Sat Apr 01 04:00:00 EST 1989 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.39.1623· OSTI ID:6312203

Shanmugam, G; Thiagasundaram, M

The isovector giant dipole resonances in hot rotating light nuclei in the calcium region are studied using a rotating anisotropic harmonic oscillator potential and a separable dipole-dipole residual interaction. The influence of temperature on the isovector giant dipole resonance is assumed to occur through the change of deformation of the average field only. Calculations are performed for the three nuclei /sup 40,42/Ca and /sup 46/Ti which have spherical, oblate, and prolate ground states, respectively, to see how their shape transitions at higher excited states affect the isovector giant resonance frequencies built on them. It is seen that, while the width fluctuations present at T = 0 vanish at T = 0.5 MeV in /sup 40,42/Ca, they persist up to T = 1.5 MeV in the case of /sup 46/Ti. This behavior brings out the role of temperature on shell effects which in turn affects the isovector giant dipole resonance widths.

• Research Organization: Department of Physics, Presidency College, Madras 600 005, India
• OSTI ID: 6312203
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 39:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
CALCIUM 40
CALCIUM 42
CALCIUM ISOTOPES
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
GIANT RESONANCE
HARMONIC OSCILLATOR MODELS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
NUCLEI
RESONANCE
ROTATIONAL STATES
STABLE ISOTOPES
TEMPERATURE EFFECTS
TITANIUM 46
TITANIUM ISOTOPES