Direct Evidence for a New Giant Resonance at $80 A^{- \frac{1}{3}}$ MeV in the Lead Region

Publisher Website

28 March 1977

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

Vol. 38 (13) , 676-679
https://doi.org/10.1103/physrevlett.38.676

Abstract

Inelastic

α

scattering experiments at 120 MeV on

{}^{206, 208}{Pb}

,

{}^{197}{Au}

, and

{}^{209}{Bi}

reveal the existence of a new isoscalar resonance located at

\sim 80 A^{- \frac{1}{3}}

MeV in addition to the well-known resonance at

\sim 63 A^{- \frac{1}{3}}

MeV. The angular distribution of this new resonance, though not inconsistent with an

E 4

assignment, is better described by

E 0

or

E 2

. It would exhaust approximately 100%, 50%, or 17% of the corresponding isoscalar

E 0

,

E 2

, or

E 4

energy-weighted sum rules, respectively.

Keywords

This publication has 10 references indexed in Scilit:

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