STOE IPDS: Imaging Plate Diffraction System

Instrument Features

• Compact design in an interlocked radiation protection case
• Easy adjustable to Cu, Mo, Ag radiation
• Adaptable to rotating anode generators
• Active diameter of Imaging Plate is 180 mm
• System with removeable Imaging Plate for exposures on other instruments available (IPDS-E)
• Programmable crystal to Imaging Plate distance in 5 µm steps between 40 mm and 200 mm or 450 mm (IPDS-L)
• Phi-axis goniometer with height adjustment and computer-controlled stepping motor (360° rotation, 0.002°/step and oscillation mode)
• Height adjustable, lockable goniometer head
• Primary beam stop without shade
• Adjusting microscope (50x) with rotateable ocular (for crystal face description)
• Graphite monochromator

IPDS Software

Here some highlights of the powerful IPDS program package.
Please click STOE IPDS: Software Features for more details.

• Cell volumes from 45 ų to >1.000.000 ų
• Control of the new Dual-Mode Goniometer Head provided
• Indexing of reflection from grown-together crystals domains (RECIPE)
• Simultaneous integration of intensities from non-merohedric twins (TWIN)
• Handling of Q-vectors during the integration
• Software-supported determination of crystal size and shape, graphic display of the crystal shape
• Numerical absorption correction with crystal size and shape optimised by X-SHAPE, which can also derive an approximate description for crystals without faces
• Automatic space group determination / E-Statistics
• Sorting and merging of equivalent reflections
• Visualisation of reflection positions in reciprocal space

Optional Devices

• External exposure stations
• Cooling systems from Oxford Cryosystems and others
• Dual Mode goniometer head.
  This goniometer head is equipped with an additional arc. This allows to collect data in two different positions which differ by an amount of about 25°. By this means the data set can be completed. The evaluation of both data sets is done automatically by software.
• Pressure cells

Additional Tools for PC's

• X-STEP for structure determination
• Visual Xpow for powder diagrams

Created: 09.05.1996 - Updated: 10.07.98