| 摘要 |
PROBLEM TO BE SOLVED: To provide a high performance NMR cryoprobe to suppress a heat inflow through an external cable as much as possible. SOLUTION: In the NMR cryoprobe, a probe and a cryoamplifier placed in a vacuum container are cooled by a temperature decreasing means until an ultracold temperature, a thermal noise radiated from the probe and the cryoamplifier are reduced, and a unit placed outside the vacuum container at a normal temperature and the probe and the cryoamplifier placed inside the vacuum container at the ultracold temperature are connected through a relaying means for thermal insulation. COPYRIGHT: (C)2003,JPO
|
