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. Record the counter current strength Is in a Franck-Hertz tube as a function of the anode voltage Ua.

2. To determine the excitation energy from the Ea from the positions of the current strength minima or maxima by difference formation.

What you need:

Franck-Hertz control unit
09105.99
1
Franck-Hertz Hg-tube on plate
09105.10
1
Franck-Hertz oven for Hg-tube
09105.93
1
Thermocouple NiCr-Ni, sheathed
13615.01
1
Connecting cable for Franck-Hertz Hg-tube
09105.30
1
Screened cable, BNC, l = 750 mm
07542.11
1
Data cable 2 x SUB-D, plug/socket, 9 pole
14602.00
1
Software Measure Franck-Hertz experiment
14522.61
1
PC, Windows® 95 or higher

Optional equipment:

Oscilloscope, 30 MHz, 2 channels 11459.95 1
Adapter, BNC-socket/4mm plug pair 07542.27 2
Screened cable, BNC, l = 75 cm 07542.11 2

Complete Experiment Set, Manual on CD-Rom included.