Apparatus to Rotate Samples Rapidly at Temperatures Less than 2 K in High Transverse Magnetic Fields
- 1 May 1971
- journal article
- conference paper
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 42 (5) , 618-625
- https://doi.org/10.1063/1.1685187
Abstract
A system is described that allows rapid rotation of a sample at speeds up to 103 rps at temperatures less than 2 K in large transverse magnetic fields. It uses an He gas turbine with hydrostatic He gas bearings. A very compact, efficient counterflow heat exchanger was developed to cool the bearing and drive gas to 15 K. The system was developed specifically to produce high proton polarizations using the spin refrigerator technique, but is applicable to other experimental situations requiring high speed rotation at low temperatures in large transverse magnetic fields.Keywords
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