title: Circuit for maintaining constant phototube current in polarization modulation spectroscopy.
abstract: A description is given of a control circuit that maintains a constant direct current from a photomultiplier tube. The circuit is useful in spectroscopic applications employing ligh modulation at high frequencies.
authors.affiliation: Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.
authors.forename: F A
authors.initials: FA
authors.lastname: Modine