Method and apparatus for cryogenically cooling samples
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United States of America Patent
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Aug 24, 1993
Grant Date -
N/A
app pub date -
Nov 8, 1991
filing date -
Nov 8, 1991
priority date (Note) -
Expired
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Abstract
An apparatus for cryogenically cooling a sample comprises a sample chamber within which the sample is suspended, and a vacuum chamber enclosing the sample chamber. A cryogenic element forms at least part of the sample chamber and is in spaced-apart relation to the sample. The element is maintained at cryogenic temperatures by a gas cryopump. A sufficient amount of heat-conductive gas is introduced into the sample chamber for placing the sample in thermal communication with the cryogenic element, thereby cooling the sample to cryogenic temperatures.
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