THETA-THETA Powder X-ray Diffractometer

Advanced System Functionality with a Compact Footprint

The AXRD Theta-Theta brings non-ambient diffraction to your lab in a cost-effective, compact unit. This system provides a unique solution for high-temperature diffraction, with temperature stages from -190ºC to 2000ºC.

The AXRD Theta-Theta has been designed to handle larger samples or accommodate situations in which more room is needed for experimental stages, such as temperature stages or pressure cells. The FlexStage option makes mounting large samples easy, while the fully integrated cooling system keeps facility requirements to a minimum.


XRDWIN PD is our data collection software, optimized for collection versatility. XRDWIN PD makes it easy to set up personalized scan parameters for individual XRD scans and analyze data in real time during acquisition. It can be customized to perform multi-scan collections that vary in temperature, pressure, measurement conditions, or geometries. Built-in prompts optimize alignment and calibration, making the process approachable to even a novice user.

PDAnalysis enables users to analyze powder data acquired with XRDWIN PD. PDAnalysis has an unlimited number of licenses, allowing users to analyze data on or off site with no additional cost.

Advanced features of our software enable users to conduct several qualitative and quantitative analyses:

  • Phase identification
  • Search/match against COD or ICDD databases
  • Quantitative phase analysis
  • Whole-pattern fitting (Rietveld refinement)
  • Percent crystallinity
  • Crystallite size & strain
  • Lattice parameter refinement & indexing
  • Retained austenite, residual stress, pole figures, & texture
  • XRF analysis for data collected with SPD detector
  • High-resolution analysis: x-ray reflectivity (XRR) curves, rocking curves, & reciprocal space maps



  • 200 mm goniometer radius
  • 1200 Watt x-ray system
  • Vertical theta-theta measurement geometry
  • High-speed photon-counting detector
  • Temperature stage options (-190ºC to 2000ºC)
  • Gas pressure stage option
  • FlexStage for mounting large samples
  • Rotation stage
  • Sample exchanger
  • Compact footprint 100 x 61 x 171 cm (W x D x H)


  • Education and Research
  • Petrochemicals
  • Pharmaceuticals
  • Minerals, Mining and Cement
  • Paints and Coatings
  • Metal corrosion and Failure analysis
  • Chemistry and Forensics
  • Food and Cosmetics



Geometry Vertical Parafocusing Theta/Theta
Goniometer Radius 200 mm
usable angular range -4 …150 deg 2Theta
Scanning Speed 0.0001º ~ 100º/min (2Theta)
Max Motor Speed (Slew) 1000º/min
Motor Step Resolution 0.0001º
Accuracy < ± 0.02° 2θ
X-ray Power Supply 1200W
Sample Holders Single, Bulk sample, Rotation, 6-sample changer
X-ray tube cooling Internal water cooling radiator and tank
Detectors Hybrid Photon Counting Detector
Si Point Detector
Non-ambient Stages Temperature, Pressure, Humidity
Slits Divergence slits, Anti-scatter slits, Soller slits, Receiving slits, multi-layer optics (parallel beam, focusing beam