Cooled NMR probe head with uniform temperature control of the sample
US6437570B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2001 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Jan 22, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/34092
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An NMR (=nuclear magnetic resonance) probe head comprising an RF (=radio frequency) receiver coil system, which can be cooled down to cryogenic temperatures, and a room temperature pipe (5), extending in a z direction, for receiving a sample tube containing sample substance to be examined by NMR measurements is characterized in that a temperature control (11) is disposed between the RF receiver coil system and the sample tube which surrounds the sample tube in a radial direction and extends in the z direction and is almost completely transparent to RF fields, or at least has an absorption of <5%, preferably <1% for RF fields to thereby provide simple and substantial reduction in the temperature gradient in the z direction during operation without thereby impairing the NMR measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.