Thermal shape fluctuations, Landau theory, and giant dipole resonances in hot rotating nuclei

Journal Article · Mon Oct 24 00:00:00 EDT 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.61.1926· OSTI ID:6796632

Alhassid, Y; Bush, B; Levit, S

A macroscopic approach to giant dipole resonances (GDR's) in hot rotating nuclei is presented. It is based on the Landau theory of nuclear shape transitions and provides a unified description of thermal fluctuations in all quadrupole shape degrees of freedom. With all parameters fixed by the zero-temperature nuclear properties the theory shows a very good agreement with existing GDR measurements in hot nuclei. The sensitivity of the GDR peak to the shape of hot nuclei is critically examined. Low-temperature experimental results in Er show clear evidence for changes in the nuclear energy surface while higher-temperature results are dominated by the fluctuations.

• Research Organization: Center for Theoretical Physics, Sloane Laboratory, Yale University, New Haven, Connecticut 06511
• OSTI ID: 6796632
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 61:17
• Country of Publication: United States
• Language: English

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ERBIUM 160
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E1-TRANSITIONS
ELECTRIC DIPOLES
EXPERIMENTAL DATA
NILSSON-MOTTELSON MODEL
NUCLEAR DEFORMATION
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BETA DECAY RADIOISOTOPES
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ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
ERBIUM ISOTOPES
EVEN-EVEN NUCLEI
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INTERMEDIATE MASS NUCLEI
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MULTIPOLE TRANSITIONS
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NUCLEI
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