Cryogenic NMR probe

Details Cryogenic NMR probe Cryogenic NMR probe

2007-10-30

2007-10-30

Shrivastav, Brij (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

C324S318000

Reexamination Certificate

active

11504845

ABSTRACT:
The thermal performance and vacuum properties of a cryogenic NMR probe are improved when thermal control is implemented by conductive heat transfer to a cold head cooled by a heat exchanger to below the selected operating temperature. The heat load is manipulated by locating a heater to produce a more nearly constant heat load in conjunction with pulsed RF power and in one embodiment transferring such heater power through a common thermal path. In another embodiment, the heater power is conductively transferred directly to the heat exchanger.

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patent: 6263215 (2001-07-01), Patton et al.
patent: 6828889 (2004-12-01), Zaput
patent: 2005/0046423 (2005-03-01), Marek
U.S. Appl. No. 11/260,988, filed Oct. 28, 2006, Lukens et al.

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