Abstract: A novel method for automatic measurement and data processing of Franck-Hertz experiment is presented. The software Origin is used for data processing and analyzing of the automatically measured data collected from a digital oscilloscope. Then the first excitation potential of argon atom is obtained. Compared with the manual measurement method, this automatic method can simplify the experimental procedure and improve the efficiency and accuracy of this experiment.

Key words: Franck-Hertz experiment, automatic measurement, data processing, Origin