Electron Diffraction Tube Manufacturer,Supplier and Exporter in China
Product Code : SCL-AAN-11407
The wavelength of the electrons can be calculated for various anode voltages from the radius of the diffracted rings and the distance between the crystal layers in the graphite.
The electron diffraction Scince Lab Supplies tube illustrates the wave nature of electrons by allowing observation of interference caused by a beam of electrons passing through a polycrystalline graphite target on to a fluorescent screen.
The electrons emitted by the heated cathode are constrained to a narrow beam by an aperture and are then focussed by means of an electron-optical system.
The resulting tight, monochromatic beam then passes through a micro-mesh nickel grating situated at the aperture of the gun.
The electron diffraction tube Scince Lab Supplies is a highly evacuated tube with an electron gun consisting of a pure tungsten heater filament and a cylindrical anode all contained in a clear glass bulb.
Onto this grid, a thin layer of polycrystalline graphitised carbon has been deposited by vaporisation.
This layer affects the electrons in the beam much like a diffraction grating.
The result of this diffraction is seen in the form of an image comprising two concentric rings that become visible on the fluorescent screen.
A spot resulting from the un-deflected electron beam continues to be visible at the centre of the rings. Also requires an EHT power supply.
Specifications:
• Max. anode voltage: 5 kV
• Max. filament voltage: 6.3 V AC
• Anode current: approx. 0.1 mA at 4 kV
