Teltron Dual Beam Tube S
Product Code : JLI-PLE-10598
Quick Answer: The Teltron Dual Beam Tube S is a semi-evacuated electron tube filled with low-pressure helium, with tangential and axial electron guns. It is used to observe excitation and particle collisions and to determine the electron charge-to-mass ratio from the diameter of the beam pattern.
Last updated: 18 October 2026
Key Features
- Helium filling makes the electron beams visible as fine luminescent lines.
- Axial gun with a co-axial magnetic field: impact excitation and particle collisions.
- Tangential gun with a perpendicular magnetic field: e/m from the beam-pattern diameter.
Technical Specifications
| Specification | Value |
|---|---|
| Gas filling | Low-pressure helium |
| Electron guns | Tangential and axial |
How It Is Used
Choosing the axial gun and a field along the tube axis lets students explore kinetic gas theory through collisions with helium atoms. Switching to the tangential gun with a field at right angles bends the beam into a pattern whose diameter is measured to work out e/m.
Frequently Asked Questions
What is the Teltron Dual Beam Tube S filled with?
Low-pressure helium. Excitation of the helium atoms produces the fine, luminescent beams that are observed.
Related Physics Lab Equipment
See the full physics lab equipment range, or these related S-series electron tube apparatus:
- Teltron Helmholtz Pair of Coils S
- Teltron Tube Holder S
- Teltron Perrin Tube S
- Teltron Electron Diffraction Tube S
Laboratories and education suppliers in Benin, Syria, Montenegro, Fiji and Democratic Republic of the Congo can source the Teltron Dual Beam Tube S from JLab India for export.
For a quotation on the Teltron Dual Beam Tube S, contact JLab India on +91-8569909696.
.jpg)