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3B Scientific™ Fine Beam Tube T
Complete experimental system is used to determine electron's specific charge and investigate deflection of electron beams in uniform magnetic field.
Supplier: 3B Scientific™ U18575
Description
- Inside fine beam tube, sharply delimited electron beam is generated by system comprising indirectly heated oxide cathode, perforated anode and Wehnelt cylinder
- Impact ionization of helium atoms creates very bright, also sharply delimited trace of electron path in tube
- If tube is aligned optimally and an appropriate current flows through Helmholtz coils, electrons are deflected into circular orbit
- Diameter, anode voltage and magnetic field are parameters used to determine electron's specific charge
- Magnetic field can be calculated from coil current, geometry of Helmholtz coil pair being known
- Electron deflection in uniform magnetic field
- Closed orbit or spiral path
- Determining an electron's specific charge e/m
- Tube's rotary angle: -10°, +270°
- Supply voltage: 100 to 240V 50/60Hz
- Power supply cable: EU, UK and US
- Dimensions: ∽31 x 27.5 x 41cm3
- Weight: ∽7.5kg
- Gas filling: Helium
- Gas pressure: 0.13hP
- Bulb diameter: 16.5cm
- Orbit diameter: 20 to 120cm
- Measurement mark
- Spacing: 20cm
Specifications
| Fine Beam Tube T |
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