"RHEED" Reflection High-Energy Electron Diffraction

30KeV RHEED-GUN RDA-003G
CONTROL POWER SUPPLY RDA-004P
Reflection High-Energy Electron Diffraction (RHEED) has become widely known as an essential method for real-time observation of crystal growth. RHEED can be used to analyze film surfaces in either a static mode for existing materials or dynamically as film growth evolves. This makes RHEED an exceptionally valuable tool for investigating structures in Molecular Beam Epitaxy (MBE).
In general, RHEED is a method for investing the structure of crystal surfaces. A high-energy electron beam(10-30KeV) is directed at the sample surface at a low incident angle(1-2°).The electrons are diffracted by the crystal structure of the sample being investigated and then projected on a fluorescent screen mounted opposite the electron gun.  The characteristic pattern of the impinging electrons is a series of streaks.  The distance between the streaks is an indication of the surface lattice cell size.


[ Features ]
Developed and Designed for Researchers to easily operate
  • A remote control box contains both an accelerating voltage and emission current meter making it easy to confirm the diffraction image observed on the screen while safely and efficiently controlling all operational parameters of the system.

  • Designed for easy maintenance, including filament replacement and beam alignment, there are no minor adjustments required from run-to-run.

  • The external-control connector allows you to vary the high voltage, filament, and XYZ lens of RHEED.

  • The outgas generated from the body of Electron-gun is lowered by giving the surface treatment inside it.


30KeV ELECTRON GUN
Model Number RDA-003G
Beam Spot Size 90micro meter dia. Maximum
Filament 0.1mm dia. Tungsten Wire (hairpin-shaped)
Wehnelt Self Bias
Focus Lens Air Core Solenoid Coil Lens
Deflection Lens Toroidal Coil Lens
Axial Alignment Mechanism Alignment for Filament and Wehnelt
Insulation Voltage DC30KV
Working Pressure <10-4Pa to 10-9Pa
Max. Bakeout Temperature 200 degrees C
Mounting Flange ICF70
Dimensions 100mm dia. x 401mm long
(501mm long with a connector inserted)


30KeV E-GUN POWER SUPPLY
Model Number RDA-004P
Acceleration Voltage 0 to -30KeV Constant Voltage Supply 
( Ripple 0.03% Maximum)
Beam Current 0 to 160 micro ampere
Filament Voltage 0 to 5V Constant Voltage Supply
(Ripple 0.05% Maximum)
Filament Current Max. 2A 
Deflection Lens Supply    1A Constant Current Source(plus or minus1V)
(Ripple 0.05% Maximum)
Focus Lens Supply 0 to 1.5A Constant Current Source(0 to 22V)
(Ripple 0.05% Maximum)
Input Power 200V, 220V, 230V, 240V
Dimensions 480mm x 199mm x 500mm (cable +100mm)
Safety Feature High Voltage Interlock
Others RoHS-ready



kSA400 - Leader in Analytical RHEED and LEED

The kSA 400 Analytical RHEED system is an integrated hardware software product designed specifically for evaluating and analyzing crystalline thin film surfaces. Many features of the kSA 400 system are not available in any other product worldwide.





"PlUG-IN SOFTWARE"
360KB "RHEED GUN CONTROL OPTION (pdf)