Apparatus for use in nmr system
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United States of America Patent
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Issued Date -
Sep 15, 2005
app pub date -
Oct 14, 2003
filing date -
Sep 6, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Apparatus for use in a nuclear magnetic resonance system comprises a cryostat including a coolant vessel (3) containing coolant such as liquid helium (4) and a refrigerator (8) for cooling coolant in the coolant vessel, the cryostat surrounding a sample space (10). A superconducting coil (2) is located in the coolant vessel (3) for generating a B.sub.o magnetic field in the sample space (10). Rf magnectic field generating and receiving apparatus (14)is located adjacent the sample space. A closed coolant loop (16) contains coolant such as helium which is cooled by the refrigerator (8), and a pump (20) for circulating the coolant around the loop. The coolant loop (16) is thermally coupled with the rf apparatus (14) so as to cool the rf apparatus.
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