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3B Scientific™ Fine Beam Tube
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Catalog No. s05503 Shop All 3B Scientific Products
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Diameter (Metric) Tube:
16 cm
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Catalog No. Diameter (Metric) Tube
S05503 16 cm
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Catalog No. S05503 Supplier 3B Scientific™ Supplier No. U8557540

Item Discontinued This item has been discontinued by the supplier. Please to view product availability in your area.

Description

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 gas atoms are ionized along the electron path and produce a sharply defined, visible fluorescent beam. The tube is mounted on a base with color coded connectors.

Experiment topics:

  • Deflection of electrons in a closed circular path inside a magnetic field
  • Determination of specific charge of an electron e/m

The evacuated glass tube is integrated with an electron beam system consisting of:

  • an indirectly heated oxide cathode
  • a Wehnelt cylinder and a perforated anode
  • residual gas atmosphere with set gas pressure
  • integrated measurement marks for parallax-free measurements
  • Gas filling: Neon
  • Gas pressure: 1.3 x 10-5 hPa
  • Filament voltage: 4 to 10V AC/DC
  • Filament current: 300 to 450mA
  • Wehnelt voltage: 0 to -50V
  • Anode voltage: 200 to 300V
  • Anode current: <0.3mA
  • Circular path diameter: 20 to 120mm
  • Division spacing: approx. 20mm
  • Tube diameter: approx. 160mm

Specifications

Product Type Fine Beam Tube
Height (English) 10.2 in.
Height (Metric) 26 cm
Voltage 4 to 10 VAC/VDC (filament), 0 to 50 V (fehnelt), 200 to 300 V (anode)
Weight (English) 1.5 lb.
Weight (Metric) 0.7 kg
Amperage <0.3mA, <150mA
Gas Pressure 1.3 x 10-5 hPa
Diameter (Metric) Tube 16 cm
Diameter (English) Tube 6.2 in.
Includes Indirectly heated Oxide cathode, wehnelt cylinder and a perforated anode, residual Gas atmosphere with set Gas pressure, integrated measurement marks for parallax-free measurements, 16cm dia. tube mounted on a base with color coded connectors
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