Abstract
The cross section is calculated for inelastic scattering of light in the 'Curie-Weiss' temperature region where the DC conductivity diverges as (T-Tc)-1/2 for a bulk specimen. The analogue of the Aslamazov-Larkin diagram is evaluated and a cross section is found which diverges as (T-Tc)-3/2 in the bulk and as (T-Tc)-2 for a thin film specimen. These factors are multiplied by lineshape functions which characterize the slowing down of the fluctuations above the phase change. The numerical magnitudes for transmission scattering is estimated For a bulk, dirty specimen with a mean free path of 100 AA, a conservative estimate for the Rayleigh ratio per unit wavenumber is 2.7*10-12 T3/2 (T-Tc)-3/2. Also an estimate is given for a transmission experiment of the magnitude of the cross section for scattering in the superconducting state.
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