NMR measuring configuration with optimized sample container geometry and method for calculating the shape of the sample container

US8912796B2 · kind B2 · utility

Assignee

• Bruker Biospin GmbH · DE

Inventors

• Dirk Wilhelm · Zürich, CH
• Thomas Speck · Berlin, DE
• Oskar Schett · Uster, CH

Key dates

• Filing date: Mar 11, 2012
• Grant date: Dec 16, 2014
• Expiry date: Jun 14, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/56536
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sample container (2) for NMR measurements defines a volume (V) of sample substance. The sample container (2) has a first interface (G1) towards an environment (1) and a second interface (G2) towards the sample substance (3). A susceptibility jump at the second interface G2 is sufficiently large that the maximum value of |B′G2/B0| within the volume (V) is at least 0.5 ppm. The geometry of the sample container (2) is selected in such a fashion that, when a homogeneous magnetic field B0 has been applied, a location-dependent relative field change F is present in the volume (V), which is larger than 20 ppb at least at one point in a center partial volume (V1) and a first residual field (R1) in the center partial volume (V1) is smaller than 1.6 ppb. A second residual field (R2a) in the lower partial volume (V2a) is smaller than 30 ppb.