Modified C0ntroIIer of MS—10 Mass Spectrometer

The controller of A. E. I. MS—10 mass spectrometer is an instrument using electronic tube circuit. It has been modified with an integrated circuit by the authors. The new controller has a good stability. Measurement range of the ampilifier is enlarged from 10mV—10V to 10mV—100V. The measurement error is within ±0.5％. It is table for K—At and ~(40)Ar/~(35)SAr age dating.