Електровакуумний прилад з вузьким пучком, на підставці для підключення

Електровакуумний прилад з вузьким пучком, на підставці для підключення

The Fine Beam Tube is for examining the deflection of electron beams in a uniform magnetic field using a pair of Helmholtz coils and for the quantitative determination of the specific charge of the electron.

Experiment topics:

• Deflection of electrons in a closed circular path inside a magnetic field.

• Determination of specific charge of an electron e / m.

The evacuated glass tube is integrated with an electron beam system consisting of:

• an indirectly heated oxide cathode

• a Wehnelt cylinder and a perforated anode

• residual gas atmosphere with set gas pressure

• integrated measurement marks for parallax-free measurements

The gas atoms are ionized along the electron path and produce a sharply defined, visible fluorescent beam. The tube is mounted on a base with color coded connectors.

Gas filling: Neon

Gas pressure: 1.3 x 10-5 hPa

Filament voltage: 5 - 7 V DC

Filament current: <150 mA

Wehnelt voltage: 0 - -50 V

Anode voltage: 200 - 300 V

Anode current: <0.3 mA

Circular path diameter: 20 - 120 mm

Division spacing: approx. 20 mm

Tube diameter: approx. 160 mm