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3B Scientific™ Fine Beam Tube T
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Catalog No. S08158 Shop All 3B Scientific Products
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S08158 Fine beam tube T
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Catalog No. S08158 Supplier 3B Scientific™ Supplier No. U18575
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Description

Complete experimental system is used to determine electron's specific charge and investigate deflection of electron beams in uniform magnetic field.

  • 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

Experiment Topics:

  • 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

Fine-beam tube:

  • Gas filling: Helium
  • Gas pressure: 0.13hP
  • Bulb diameter: 16.5cm
  • Orbit diameter: 20 to 120cm
  • Measurement mark
  • Spacing: 20cm

Specifications

Product Type Fine Beam Tube T
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