Local deviations from the Grodzins systematics: Enhanced collectivity in the transitional Ra-Th nuclei

Journal Article · Mon Nov 21 00:00:00 EST 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.61.2424· OSTI ID:6699280

Gai, M

Local deviations from the Grodzins systematics for the product E(2/sup +/)B(E2) are observed in several light Ra-Th nuclei. We note an abrupt increase to 5.5% of the isoscalar E2 energy-weighted sum rule, almost a factor of 2 above the value typically found near shell closures and equal to the value found in the very deformed actinides. This indicates mixing of a low-lying deformed state into the ground state of the light Ra-Th nuclei, as expected for a low-lying cluster state. Evidence for mixing of a deformed state is also present in the rms radii and binding energies of these nuclei.

• Research Organization: A. W. Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06511
• OSTI ID: 6699280
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 61:21
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
LEAD ISOTOPES
ENERGY-LEVEL TRANSITIONS
MERCURY ISOTOPES
PLATINUM ISOTOPES
PLUTONIUM ISOTOPES
POLONIUM ISOTOPES
RADIUM ISOTOPES
RADON ISOTOPES
THORIUM ISOTOPES
URANIUM ISOTOPES
BINDING ENERGY
CLUSTER MODEL
E1-TRANSITIONS
E2-TRANSITIONS
NUCLEAR DEFORMATION
NUCLEAR RADII
ACTINIDE ISOTOPES
ALKALINE EARTH ISOTOPES
DEFORMATION
ENERGY
ISOTOPES
MATHEMATICAL MODELS
MULTIPOLE TRANSITIONS
NUCLEAR MODELS
NUCLEAR PROPERTIES
652020* - Nuclear Properties & Reactions
A=220 & above
Experimental