Licht M Ixing in a Plasma in an External Magnetic Field

As the absolute intensities of R a m a n lines due to the symmetrical C = N, C — C and C = C stretching vibra­ tions depend on the derivatives of the polarizabilities of the respective bonds, such calculations have been made here from the above derived equation using the internuclear distances, delta-function strengths, B o h r radius, etc. given earlier for carbon subnitride. The calculated values of the polarizability derivatives in Ä2 for the C = N, C —C and C = C bonds are 2.347, 1.227 and 2.411, respectively. These values compare well with those measured experimentally in other related systems having similar chemical bonds. They are 2.61 Ä2 for the C = N bond in acetonitrile 48,