<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>E</mi><mn>2</mn><mn></mn></math></span> Strength in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">C</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>12</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> Determined by Elastic Photon Scattering

W. R. Dodge; E. Hayward; R. G. Leicht; B. H. Patrick; R. Starr

doi:10.1103/PhysRevLett.44.1040

$E 2$ Strength in ${}^{12}C$ Determined by Elastic Photon Scattering

W. R. Dodge, E. Hayward, R. G. Leicht, B. H. Patrick, and R. Starr

Phys. Rev. Lett. 44, 1040 – Published 21 April 1980

Abstract

The elastic-photon-scattering cross section for ${}^{12}C$ has been measured at 90° and 135° in the energy range from 23.5 to 39 MeV. These data disagree with the predicted scattering, derived from the measured photonuclear absorption cross section, if only $E 1$ transitions are assumed. To explain the difference in these cross sections, a large component of electric quadrupole absorption between 24 and 40 MeV is inferred.

Received 19 November 1979

DOI:https://doi.org/10.1103/PhysRevLett.44.1040

Authors & Affiliations

W. R. Dodge, E. Hayward^*, R. G. Leicht^†, B. H. Patrick, and R. Starr

Center for Radiation Research, National Bureau of Standards, Washington, D. C. 20234

^*On leave from Max-Planck-Institut für Chemie, Mainz, Germany, supported by Deutsche Forschungsgemeinschaft.
^†Present address: Atomic Energy Research Establishment, Harwell, Didcot, Oxon OX11 0RA, England.