The Fine Beam Tube is for designed 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. The Neon-filled glass tube is integrated with an electron beam system consisting of an indirectly heated oxide cathode, a Wehnelt cylinder, integrated measurement marks for parallax-free measurements, and a perforated anode. The Neon atoms are ionized along the electron path and produce a well-defined, visible fluorescent beam. For operation, the tube needs to be mounted on the Control Unit (U8481435).
Topics which can be experimentally investigated:
- Deflection of electrons in uniform magnetic field
- Determination of specific charge (e/m) of an electron
- Electron optics and fundamental atomic properties
- Collisional excitation of gases
Specifications:
Gas filling: Helium
Gas pressure: 1.3 x 10-5 hPa
Filament voltage: 4 – 10 V AC/DC
Filament current: 300 – 450 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
Teltron Fine Beam Tube Integrated Power Supply and Coils
Integrated base control unit, power supply, and coils for operating the Fine Beam Tube.
Specifications:
- Beam voltage / accelerating voltage: 15 – 400 VDC adjustable with front panel control
- Coil current: 0 – 4.5 A adjustable
Item: U8481425
$ 1,799.00
DC Power Supply 0-500 V (115 V, 50/60 Hz)
Low voltage power supply with four outputs primarily intended to simultaneously supply power for the Teltron line of electron tubes and Helmholtz Coils, with four independent, adjustable DC voltages. The DC voltages are stabilized, regulated, floating
...Item: U33000-115
$ 599.00
DC Power Supply 0-500 V (230 V, 50/60 Hz)
Low voltage power supply with four outputs primarily intended to simultaneously supply power for the Teltron line of electron tubes and Helmholtz Coils, with four independent, adjustable DC voltages. The DC voltages are stabilized, regulated, floating
...Item: U33000-230
$ 649.00
Helmholtz Coils, 300 mm
Helmholtz coils are used to produce a homogeneous magnetic field. Experiments on induction and electron deflection can be performed with the Rotary Frame with Flat Coil and the Fine Beam Tube. The coils can be used in parallel or in series
...Item: U8481500
$ 679.00
Set of 15 Safety Experiment Leads, 75 cm
For electrical circuits with low voltages and high currents; copper wire encased in highly flexible PVC; equipped at either end with a laminated safety plug and a fully-insulated axial jack for connecting additional patch cords.
Wire cross-section ...
Item: U138021
$ 105.00
Weights & Measurements
13.8 x 11.1 x 8.7 in
1.19 lb
MPN: 1008505
