Low-temperature goniometer for X-ray and neutron diffractometry

Details Low-temperature goniometer for X-ray and neutron diffractometry Low-temperature goniometer for X-ray and neutron diffractometry

1985-02-08

1987-02-24

Capossela, Ronald C.

Refrigeration

Refrigeration producer

Evaporator, e.g., heat exchanger

62376, 378 81, F25B 1900

Patent

active

046447610

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.

REFERENCES:
patent: 3566112 (1971-08-01), Luecke
patent: 3619610 (1971-11-01), Politis
patent: 3728541 (1973-04-01), Rabinovich et al.
patent: 3839635 (1974-10-01), Chan et al.
patent: 3860815 (1975-01-01), Hall
patent: 3992624 (1976-11-01), Flannery et al.
patent: 4141224 (1979-02-01), Alger et al.
patent: 4407136 (1983-10-01), de Kanter
Troitskaya, Z. V. et al.: "High Pressure X-Ray Camera for Taking Photogra at Temperatures Down to 120.degree.K." Instrum. Exper. Tech. (USA) No. 4 (Jul., Aug., 1969) pp. 1017-1019.
Boiko, A. A. et al.: "Helium Cryostate in a Diffractometer for Structural Research" Instrum. Exper. Tech. (USA) vol. 15, No. 3 (May, Jun. 1972) pp. 929-931.

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