Bruker Biospin Gmbh

Martin Armbruster

Alexander Krahn

David Osen

Benno Knott

Ralf Haueisen

Priyanga Bandara

Juergen Ganz

An NMR probe head () having an RF coil arrangement () in a coil region () and an RF shielding tube () for supply lines leading from a connection region () to the coil region. An elongated backbone () is arranged inside the shielding tube and has an inherently rigid, mechanically stiff structure having continuous bores and/or connecting channels () which run parallel to the tube axis and accommodate the supply lines. The backbone has a continuously electrically conductive outer surface which leads from the connection region to the coil region and is electrically conductively connected to the conductive inner surface of the shielding tube via connecting elements (). A continuous electrically conductive contour is formed thereby between the backbone and the shielding tube. This shields against externally incident RF fields and spatially separates the stable mechanical supporting construction and the supply lines from the electronic and RF components.

NMR probe head with a backbone in the shielding tube

A nuclear magnetic resonance (NMR) magic angle spinning (MAS) probe head () for measuring a measuring substance in an MAS rotor (-), comprises a bottom box () and a tube () mounted to the bottom box () and projecting from the bottom box, wherein, in the area of the end () of the tube () facing away from the bottom box (), an MAS stator () is disposed within the tube () for receiving an MAS rotor (-), and with a pneumatic sample changing system for supplying and discharging an MAS rotor (-) to/from the MAS stator (). A transport conduit () is provided for pneumatically transferring an MAS rotor (-) within the transport conduit (), wherein the transport conduit () extends in the inside of the tube () from the bottom box () to the MAS stator (). The probe head realizes fast change between different MAS rotors and facilitates RF shielding and keeping of defined extreme temperature conditions.

NMR-MAS probehead with integral transport conduit for an MAS-rotor

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Munich, Georgia

Martin Armbruster