Superconducting NMR resonators with macroscopically homogeneous superconductor distribution
US6605945B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2002 |
| Grant date | Aug 12, 2003 |
| Priority date | — |
| Expiry date | Oct 3, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/34092
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An NMR resonator for receiving RF signals at desired resonance frequencies from a measuring sample in a volume under investigation disposed about a coordinate origin (x,y,z=0), with a means for producing a homogeneous magnetic field B0 in the direction of a z axis, wherein superconducting conductor structures are disposed between z=−|z1| and z=+|z2| on a surface which is translation-invariant (=z-invariant) in the z direction at a radial separation from the measuring sample, is characterized in that a compensation arrangement is additionally provided on the z-invariant surface, which extends to values of at least +|z2|+0.5|r|>z>−|z1|−0.5|r|, wherein |r| is the minimum separation between the measuring sample and the compensation arrangement, wherein the compensation arrangement comprises further superconducting conductor structures which are RF-decoupled from the RF resonator, with the conductor structures of the compensation arrangement and of the RF resonator being composed of individual surface sections (“Z-structures”) which comprise superconducting structures and are disposed in the z-invariant surface to each extend along the entire length in the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.