NMR-MAS turbine assembly
OwnerDavid Osen, Benno Knottinventors
Life of this patent
Estimating the term…
Abstract
A nuclear magnetic resonance-magic angle spinning (NMR-MAS) turbine assembly has a MAS rotor with turbine cap having a stopper region and a turbine region. The stopper region allows feeding into a rotor tube and has at least one sealing section for resting against an inner wall of the rotor tube. The turbine region has a collar section for resting against a face side of the rotor tube and a turbine section that forms the turbine blades, which protrude axially from the collar section without extending radially further than the collar section. The arrangement of the rotor allows for very high rotation frequencies that, correspondingly, reduce line broadening in NMR measurements.
Claims21
A turbine cap for an NMR-MAS rotor comprising:
- a stopper region for feeding into a rotor tube of the NMR-MAS rotor, the stopper region having at least one sealing section for resting against an inner wall of the rotor tube, wherein the sealing section has an outside diameter SDAD between 0.303 mm and 0.603 mm;
- and
- a turbine region, which projects radially with respect to the stopper region and which is formed with five turbine blades, the turbine region having a collar section for resting against a face side of the rotor tube, said collar section having an outside diameter TBAD, with TBAD>SDAD, and wherein the turbine region further has a turbine section which forms the turbine blades, which protrude axially from the collar section, and which do not extend radially beyond the collar section, the turbine blades being formed with a blade tip having a radius of curvature SSKR between 0.0020 mm and 0.0045 mm, and a concave first blade piece (S1) connecting to the blade tip having a first circular contour with a radius of curvature S1KR between 0.050 mm and 0.150 mm.
Dependencies are inferred from the claim text.