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Determining the specific charge of the electron
  1. Introductory experiments
  2. X-ray physics
  3. Radioactivity
  4. Nuclear physics
  5. Quantum physics

Fine beam tube

LD 555571
Fine beam tube
Fine beam tube

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For ordering the dangerous good or other information please contact our customer service center.
 This experiment/set up contains dangerous goods.
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Description

Hot cathode ray tube with indirectly heated oxide cathode, Wehnelt cylinder and conical anode with a screening cylinder, as well as a pair of plates for electrostatic deflection of the beam. Hydrogen filling with precisely adjusted pressure in which the path of electron beams can be seen in the form of a luminous, sharply defined bundle of ions.

Technical data

  • Gas filling: hydrogen 1.33 x 10-5 bars
  • Electrode system: indirectly heated oxide
    cathode, Wehnelt cylinder, conically shaped
    anode with semi-cylindrical screen
  • Filament voltage and current: 6 V, 1 A approx
  • Anode voltage: 150 V DC to 300 V DC
  • Wehnelt voltage: 10 V max.
  • Deflection: pair of deflection plates for electrostatic deflection
  • Connecting socket with nine pole pin-socket (555 581)
    (The old tube stand 55558 can be modified  by our service department to accept 555571.
    Alternatively, an adapter can be supplied. Price on request.)
  • Deflection voltage: 50 V DC to 100 V DC
  • Dimensions:
    Diameter of glass bulb: 17.5 cm
    Overall length: approx. 35 cm

Related Documents

PDF (Instruction Sheet) PDF (Instruction Sheet) [555 571] Fine beam tube
PDF (Experiment description) PDF (Experiment description) P6.1.3.1 Determining the specific charge of the electron
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