A new type of photoelectric magnetograph

The 'electro-optic deflector' as an analyzer of circular polarization in the photoelectric magnetograph is described. The electro-optic deflector consists of an electro-optic crystal and a polarizing beamsplitter. The plane bifurcation of this beamsplitter coincides with the spectrograph dispersion direction. The beamsplitter bifurcates a spectral line in two components. The distance between them is Δlambda0. The photometer slit is situated between these components. Both components of Zeeman splitting fall on the photometer slit but the distance between them varies from Δlambda0 + 2Δlambdasub(H) to Δlambda0 - 2Δlambdasub(H) (where Δlambdasub(H) is the Zeeman splitting) with the electric voltage frequency applied to the electro-optic crystal. The intensity variations at the photometer slit are proportional to 4Δlambdasub(H). (Auth.)