Franck-Hertz Experiment

The electron-collision experiment according to Franck and Hertz is central for the fundamentals of quantum mechanics and closely related to our understanding of the structure of atoms.

Similar to the famous experiment conducted by James Franck and Gustav Hertz collisions between accelerated electrons and neon atoms are investigated. Measuring the anode current for varying acceleration and deceleration voltage allows insights into the mechanisms of energy transfer on the atomic scale. It turns out that the neon atoms can be excited only by discrete amounts of energy even though a continuous spectrum of energies is offered by varying the acceleration voltage. This confirms that electrons in atoms can be excited only to discrete energy levels.

Duration: 1/2 day
Max. number of participants: 10
Suitable combinations: Öffnet internen Link im gleichen FensterAtomic physics, Öffnet internen Link im gleichen FensterLaser physics, Öffnet internen Link im gleichen FensterX-ray Physics

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