Fine Beam Tube on Connection Base,
Type R

Fine Beam Tube on Connection Base,
Type R, 1024633, Electron Tubes – Type D (Small)

Fine Beam Tube on Connection Base,
Type R

1,744.14 €

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Overview of all experiments in which the product is used

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Description
Experiments

Applications and Experiments:_..

•	Deflection of electrons in a closed circular path inside a magnetic field
•	Determination of specific charge of an electron e/m

Product Information:_..

Used together with the pair of Helmholtz coils (item no. 1000906), this fine beam tube can be used to investigate the deflection of electron beams in a homogeneous magnetic field. The tube contains a neon residual gas atmosphere that is ionized along the path of the electrons, producing a bright, sharply defined beam. Measurement markings integrated into the tube allow the diameter of the circular path of the deflected beam to be determined without parallax error. Using the Lorentz force, this also allows the specific charge of the electron, e/m, to be determined quantitatively.
The fine beam tube is mounted on a base with color-coded 4 mm safety sockets. To protect the tube, the base includes a protection circuit that switches off the voltage if it exceeds the cutoff value specified on the tube base. This protection circuit prevents excessively high voltage from damaging the heater and also ensures a soft voltage ramp-up when the unit is switched on.

Specifications:_..

Gas filling:	Neon
Gas pressure:	1.3 x 10^-5 hPa
Filament voltage U_F:	5 – 7 V DC
Filament current I_F:	< 350 mA
Wehnelt voltage:	0 – -50 V
Anode voltage U_A:	200 – 300 V
Anode current I_A:	< 3 mA
Circular path diameter:	20 – 120 mm
Measurement mark distance:	20 mm approx.
Bulb diameter:	160 mm approx.
Dimensions connection base:	Ø: 103 mm approx.; height: 78 mm
Weight:	820 g approx.