Experiment: Critical Potentials (230 V, 50/60 Hz)

Experiment: Critical Potentials (230 V, 50/60 Hz), 8000716 [UE5020500-230], Atomic shells
4,629.00
Thematic focus: ..
•  Measure the collector current IR as a function of the accelerating voltage UA.
•  Compare the positions of the current maxima with the known critical potentials of the helium atom.
•  Identify the doublet structure in the term scheme of helium (ortho and para helium).

Experiment description: ..
The expression “critical potential” is a general name for all the excitation and ionisation energies in the electron shells of an atom. The corresponding electronic states can be excited in various ways, for example by inelastic collisions with electrons. If the kinetic energy of the electron corresponds to a critical potential, the electron can lose all its kinetic energy in an inelastic collision. An experiment setup originally designed by Gustav Hertz is used here to determine critical potentials.




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Critical Potentials Tube S with He-Filling, 1022131, Electron Tubes S

Critical Potentials Tube S with He-Filling

1022131
Unit price
1,416.25 €
Premium Franck-Hertz Experiment Power Supply
(230 V, 50/60 Hz), 1012819 [U8482530-230], Electron Tubes D

Premium Franck-Hertz Experiment Power Supply
(230 V, 50/60 Hz)

1012819 [U8482530-230]
Unit price
1,878.75 €
Digital Oscilloscope, 2x30 MHz, 1020910 [U11834], Oscilloscopes

Digital Oscilloscope, 2x30 MHz

1020910 [U11834]
Unit price
537.50 €
HF Patch Cord, BNC/4 mm Plug, 1002748 [U11257], Experiment Leads and Cables

HF Patch Cord, BNC/4 mm Plug

1002748 [U11257]
Unit price
55.13 €
Set of 15 Safety Experiment Leads, 75 cm, 1002843 [U138021], Circuits

Set of 15 Safety Experiment Leads, 75 cm

1002843 [U138021]
Unit price
120.00 €
Item No.: 8000716 [UE5020500-230]
Brand 3B Scientific
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