Flow-through probe for nmr spectrometers

G - Physics – 01 – R

Patent

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Details

G01R 33/20 (2006.01) G01R 33/30 (2006.01) G01V 3/00 (2006.01)

Patent

CA 2384819

There is disclosed an NMR probe including a body defining an internal chamber. This chamber is adapted for supporting a vacuum and the body is of a non- magnetic material. A conduit extends through the chamber in the body. The conduit has a first portion in communication with second portions, the first portion being intermediate the second portions, with the first and second portions of non-magnetic materials with substantially equal thermal expansion coefficients. An RF coil is positioned along at least a substantial portion of the first conduit portion. It is preferred that this device also include a field or frequency lock unit in the chamber, as well as a getter, to allow for degassing in the chamber to maintain the preferred high pressure vacuum. A method of using this NMR probe for NMR analysis is also disclosed.

L'invention concerne une sonde RMN pourvue d'un corps qui définit une chambre intérieure. Cette chambre est conçue pour supporter un vide et le corps est constitué d'un matériau non magnétique. En outre, la chambre est traversée par un conduit Ce qui comporte une première partie communiquant avec des secondes parties. La première partie se trouve entre les secondes parties et la première et la seconde parties non magnétiques présentent des coefficients de dilatation thermique sensiblement égaux. Une bobine RF est disposée le long d'au moins une partie substantielle de la première partie du conduit. De préférence, ce dispositif comporte également une unité de champ ou de verrouillage de fréquence dans la chambre, ainsi qu'une pompe getter, afin de permettre un dégazage à l'intérieur de la chambre et de maintenir le vide haute pression préféré. L'invention concerne également un procédé d'utilisation de cette sonde RMN afin d'effectuer des analyses RMN.

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