With the possibility to be set-up vertically as well as horizontally, the STADIVARI increases its scope of application.
The STADIVARI can be used for single crystal and powder diffraction. The Open Eulerian Cradle offers enough space to add high pressure cells, high- or low- temperature devices or other chambers.
In the dual beam setup, all combinations of tubes and microfocus BDS are possible: two sealed tubes, one sealed tube and one microfocus BDS or two microfocus BDS.
As the youngest member of the long line of STOE diffractometers, the STADIVARI is fully integrated in the well-established STOE X-Area software package.
On STOE’s Imaging Plate Diffraction Systems IPDS II, IPDS 2T and the STADIVARI with the DECTRIS PILATUS detector the normal pin hole collimator can be exchanged against an X-ray fibre optic. The use of this optic provides a gain in intensity depending on the anode material (eg. factor 2 for Mo Kα, better for Cu Kα), sample dimension (and sample-to-detector distance).
– In this way the well known accuracy of the data sets can now
be obtained in 1/2 of the exposure time with Mo radiation.
– The data quality stays the same or is even better while no
significant raise in the background is observed.
– No broadening of peak halfwidths could be detected.
The X-ray fibre optic is an effective and inexpensive alternative to a rotating anode at the STOE Imaging Plate Diffraction System IPDS II, IPDS 2T and the StadiVari with the DECTRIS PILATUS detector.
STOE provides the suitable goniometer head for each task, whether large, standard or small, lockable x,y,z or fully height adjustable, all STOE goniometer heads are of excellent precision, have the standard IUCR mount and are delivered with the necessary equipment.
O.E.M. attachments like the Oxford Cryosystems coolers can easily be mounted on each STOE single crystal diffractometer. The low cost and low maintenance Desktop Cooler (DTC) can be used as well as the traditional Cryostream or the non-liquid nitrogen Cobra.
As non-ambient methods are becoming increasingly popular, STOE provides a powerful high-temperature attachment for the IPDS single crystal diffractometers, the HEATSTREAM.
– Temperature range from RT to 1000 K
– Temperature accuracy within +/- 1° – Heating medium N2
– No limitation in 2Θ, ω or &phi
– Vertical gas flow for optimal sample heating
|Dimensions (including system cabinet, max.)||1680 x 1150 x 2050 mm|
|Weight (complete system)||480kg|
|Sphere of confusion||< 0.01 mm|
|Goniometer (utilized angular regions)||2Θ: 240° / ω: 205° / X: 90° / Φ: 360°|
|Detector distance||40 – 140 mm (automatically set)|
|X-ray sources||Standard sealed tubes (Ag, Mo, Cu), Microfocus sources (Ag, Mo, Cu) rotating anodes or synchroton|
|DETECTOR SPECIFICATIONS||PILATUS 200K 20 Hz||PILATUS 300K 20 Hz|
|Sensor||Reverse-biased silicon diode array||Reverse-biased silicon diode array|
|Sensor thickness||320 μm / 450 μm / 1000 μm||320 μm / 450 μm / 1000 μm|
|Pixel size||172 x 172 μm²||172 x 172 μm²|
|Number of modules||1x2||1x3|
|Format||487 x 407 = 198,209 pixel||487 x 619 = 301,453 pixel|
|Area||83.8 x 70.0 mm²||83.8 x 106.5 mm²|
|Dynamic range||20 bits (1:1,048,576)||20 bits (1:1,048,576)|
|Counting rate per pixel||> 2 x 10^6 cps||> 2 x 10^6 cps|
|Energy range||3 – 30 keV||3 – 30 keV|
|Maximum frame rate||20 Hz||20 Hz|