US 10,473,735 B2Granted

NMR probe comprising a multi-part lower insert portion

AssigneeBruker Switzerland AG

InventorsRoger Meister, Jonathan De Vries

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Abstract

A temperature-controlled NMR probe has a lower insert portion formed of multiple parts including two disc-shaped sub-elements that are not mechanically rigidly interconnected, lie flat against one another in the mounted state and are perpendicular to the z axis. The first sub-element (3.1), in terms of material and geometric structure, fulfils the function of electrically insulating the RF and HV lines fed through the lower insert portion, has an electrical conductivity sigma<103 S/m, mechanically and retains components of the NMR probe constructed on the lower insert portion. The second sub-element (3.2) retains the first sub-element on a main frame (7) of the NMR probe, and is made of a ductile plastics material or metal having a mechanical breaking strength σ>100 N/mm2 and a melting temperature TS>250° C. This achieves high breaking strength and resistance to thermal stress while simultaneously attaining required RF and HV properties.

Claims20

Dependent claims

Temperature-controlled nuclear magnetic resonance (NMR) probe comprising:

an RF coil system arranged around a vertical z axis,
electrical and mechanical components, and
a disc-shaped lower insert portion arranged perpendicularly to the z axis and configured to support and/or retain the electrical and mechanical components of the NMR probe,
wherein the lower insert portion is formed of multiple parts and comprises at least first and second substantially disc-shaped sub-elements that are not mechanically rigidly interconnected, that lie flat against one another when in a mounted state and that are arranged perpendicularly to the z axis,
wherein the first sub-element is formed of a material and has a geometric structure that electrically insulates the components, such that the first sub-element has an electrical conductivity sigma<103 S/m,
wherein the first sub-element is configured to mechanically support and/or retain the components, and
wherein the second sub-element is formed of a ductile plastics material or metal that mechanically retains the first sub-element on a main frame of the NMR probe, wherein the ductile plastics material or metal has a mechanical breaking strength σ>100 N/mm2 and a melting temperature TS>250° C.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/023,066Filed 29 Jun 2018
Priority: DE 10 2017 211 01629 Jun 2017
Published: US 2019/0004126 A13 Jan 2019
Granted: 12 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G01R 33/3403
Temperature-controlled RF coils: means for cooling of the RF coils, e.g. a refrigerator or a cooling vessel specially adapted for housing an RF coil
G01R 33/30
Details of apparatus provided for in groups G01R33/44 - G01R33/64: sample handling arrangements, e.g. sample cells, spinning mechanisms
G01R 33/31
Sample handling arrangements, e.g. sample cells, spinning mechanisms: temperature control thereof
G01R 33/422
Screening: of the radio frequency field