Velocity Spectrometer for Mössbauer Experiments

Abstract

An electromechanical feedback system for Mössbauer spectroscopy with a velocity range of 2×10−5 to 60 cm/sec is described. A reference signal of the desired waveform (triangle, parabola, etc.) to drive the feedback system is produced by the multichannel analyzer and with the help of operational amplifiers. The linearity of the system for a triangular velocity waveform is better than 0.5% during 98% of the half-period.