Electric moments and charge deformation parameters inSm152,154,Gd156, andEr166

1 March 1977

journal article
research article
Published by American Physical Society (APS) in Physical Review C

Vol. 15 (3) , 921-926
https://doi.org/10.1103/physrevc.15.921

Abstract

Coulomb excitation experiments with

α

particles were performed on the four rare-earth nuclei

{}^{152, 154}{Sm}

{}^{156}{Gd}

, and

{}^{166}{Er}

E 2

and

E 4

transition matrix elements of low-lying levels in the rotational ground-state bands were obtained. Model dependent charge deformation parameters

β_{2}^{c}

and

β_{4}^{c}

were extracted assuming a deformed Fermi distribution with diffuse surface. The possible difference between charge and nuclear hexadecapole deformation observed in

{}^{154}{Sm}

does not show up in the isotone

{}^{156}{Gd}

Keywords

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