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Deflection of electrons in an axial magnetic field

P3.8.3.2
Deflection of electrons in an axial magnetic field
Deflection of electrons in an axial magnetic field

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Description

In the experiment P3.8.3.2 an axial magnetic field is applied using an electromagnet. The shadow cross turns and shrinks as a function of the coil current. When a suitable relationship between the high voltage and the coil current is set, the cross is focused almost to a point, and becomes larger again when the current is increased further. The explanation for this magnetic focusing may be found in the helical path of the electrons in the magnetic field.

Components of equipment sets

1 555 620  4  Maltese cross tube LD
1 555 600  4  Tube stand LD
1 555 604  8  Pair of Helmholtz coils LD
1 521 70  8  High-voltage power supply, 10 kV LD
1 521 546  4  DC Power Supply 0...16 V/0...5 A LD
1 500 611  4  Safety experiment cable, 25 cm, red LD
2 500 621  4  Safety experiment cable, 50 cm, red LD
1 500 622  4  Safety experiment cable, 50 cm, blue LD
2 500 641  8  Safety experiment cable, 100 cm, red LD
2 500 642  4  Safety experiment cable, 100 cm, blue LD
2 500 644  8  Safety experiment cable, 100 cm, black LD

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) P3.8.3.2 Deflection of electrons in an axial magnetic field
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Physics
Chemistry
Biology
Technology

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