Low-temperature goniometer for X-ray and neutron diffractometry
AssigneeKernforschungsanlage Julich Gesellschaft mit beschrankter Haftung
InventorsJohann Chatzipetros, Bernhard Dujka, Frank Elf, Georg Will
Life of this patent
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Abstract
An Euler's goniometer for low-temperature diffractometry is rotatable about two turning circles and is arranged within a chamber filled with a coolant. Each of the turning circles - that is the chi-circle and the phi-circle - is constituted by a worm wheel which is driven in a stepwise manner by a worm and a stepper motor driving the worm. For providing a compact construction, the stepper motors and the actuated worms are arranged within the chamber as well.
Claims16
An Euler's two-circle goniometer for cryogenic, X-ray and neutron diffractometry, comprising:
- a casing defining a chamber containing a coolant;
- a specimen holder in said chamber for a test sample;
- first and second rotating means each arranged within said chamber and operatively connected with said specimen holder for turning said test sample about a first and a second turning circle in mutually perpendicular planes;
- and
- a respective stepper motor in said chamber connected to each of said rotating means for actuating the latter so as to turn the test sample about said turning circles.
Dependencies are inferred from the claim text.