Interaction between parallel Gaussian electromagnetic beams in ionic collision dominated plasmas with thermal conduction: Erratum

The second line after Eq. (18) p. 71 should read\[\chi _0 = 13\times 10 ^{- 5}\, T^{5 / 2} / \ln \Lambda\quad {\it ergs}\ {\it cm} ^{- 1} s ^{- 1} K ^{- 1}\\[24pt]\]