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Deflection of electrons in an axial magnetic field

VP3.8.3.2
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 555620  4  Maltese cross tube LD
1 555600  4  Tube stand LD
1 555604  8  Pair of Helmholtz coils LD
1 52170  8  High-voltage power supply, 10 kV LD
1 521546  4  DC Power Supply 0...16 V/0...5 A LD
1 500611  4  Safety experiment cable, 25 cm, red LD
2 500621  4  Safety experiment cable, 50 cm, red LD
1 500622  4  Safety experiment cable, 50 cm, blue LD
2 500641  8  Safety experiment cable, 100 cm, red LD
2 500642  4  Safety experiment cable, 100 cm, blue LD
2 500644  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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Chemistry
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