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LEED Image Analysis System

Model LIM12

Contains low light integration CCD camera, frame grabber, [imaging and analysis software], Firewire™ interface and ambient light cover.

Features

  • Integrated image acquisition and beam energy control on regular and zoomed images
  • Measurements on "live" or "saved" images
  • Lattice constant calculations
  • Spot Intensity profile with fine adjustment
  • Manual and automatic I-V measurements
  • Subtraction and addition of images

Brochure Download (PDF):

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LEED image analysis system software.
LEED Image Analysis System Software

Specifications

Acquisition
  • LEED pattern viewing with instant beam voltage control and integration time at zoom x1, x2, x4 or x8
  • control of the integration time of CCD camera up to 2 sec. for low intensity images
  • automatic LEED pattern acquisition to the hard disc for pre-set range of electron beam voltages
  • video input conditioning
  • integrated software for full control of LEED controller LPS075D or LPS300D
Measurements And Processing
  • spot intensity and x-y position measurements at cursor position on live LEED pattern
  • lattice constant and angle calculation for selected diffraction spots with pre-set LEED instrument parameters
  • intensity profile plotting
  • setting the (0,0) spot position for normal electron beam configuration
  • adding two images and subtraction
  • image zooming (x2, x4 and x8)
  • sequential image saving and retrieval
  • automatic I-V spectra calculation with background subtraction on saved or live LEED patterns
  • manual I-V spectra calculation with background subtraction for set of saved LEED pattern with zoomed spot viewing
  • automatic I-T plots measurements for live LEED patterns
  • automatic Spot Profile measurements during I-V analysis
  • reliability R- factor calculation for I-V spectra
General
  • Windows 7 and Windows XP operating system
  • beam energy value saved to each LEED pattern
  • automatic memorization of last operator settings
  • images saved in Windows bitmap format
  • measurements saved in ASCII text file format
  • writing text on the image

Hardware Specifications

Camera
  • monochrome CCD camera with high spatial resolution 659x494 pixel (horizontal/vertical)
  • 1/3-type progressive scan IT CCD sensor with square pixels (7.4 x 7.4 microns cell)
  • field integration ( shutter) and gain control from software for very high sensitivity
  • 12-bit output on digital interface IEEE-1394b (Firewire™) of the camera
  • camera power from computer adaptor Firewire™ card
  • lens mount: C type, one set of lens to fit LEED screen size and distance
  • camera holder mounting kit for 8"CF (CF150), 6"CF (CF100) or 4.5"CF (CF63) flange with adjustable camera position and ambient light cover
COMPUTER INTERFACE:
  • PCI express adaptor card (IEEE-1394b) with 10 m cable
LEED controller interface:
  • USB interface with integrated software for full control of LPS075-D or LPS300-D
  • DAC control for analog LEED controllers with 16 bit digital to analog converter (0-10V output) and serial RS232/ USB communication with PC computer
COMPUTER (minimum spec):
  • Windows 7 or Windows XP operating system, 2GB RAM, 100GB Hard Disk or better
  • PCI Express slot in motherboard