Principle
Electrons are accelerated in a tube filled with mercury vapour. The excitation energy of mercury is determined from the distance between the equidistant minima of the electron current in a variable opposing electric field.
Tasks
1.To record the countercurrent strength Ι in a Franck-Hertz tube as a function of the anode voltage U.
2.To determine the excitation energy E from the positions of the current strength minima or maxima by difference formation.
What you can learn about
Energy quantum
Electron collision
Excitation energy
Materiallist Product Amount
Software Measure Franck-Hertz experiment 14522-61 1
Data cable, plug/ socket, 9 pole 14602-00 1
Screened cable, BNC, l 750 mm 07542-11 1
Connecting cord for Franck-Hertz Hg-tube 09105-30 1
Thermocouple NiCr-Ni, sheathed 13615-01 1
Franck-Hertz oven for Hg-tube 09105-93 1
Franck-Hertz Hg-tube on plate 09105-10 1
Franck-Hertz control unit 09105-99 1
