Nuclear magnetic resonance probe with cooled sample coil

Details Nuclear magnetic resonance probe with cooled sample coil Nuclear magnetic resonance probe with cooled sample coil

2008-07-22

2008-07-22

Shrivastav, Brij B. (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

C324S307000, C324S309000, C324S310000, C324S318000

Reexamination Certificate

active

07403007

ABSTRACT:
In a nuclear magnetic resonance probe, the sample coil is connected to the RF excitation source via transmission lines that are arranged to generate one or more nodal points at the1H excitation frequency along their lengths and a balanced magnetic filed profile within the sample coil. Heat exchangers are then connected directly to the inner conductor of the transmission line at these nodal points. The transmission line inner conductors are in direct contact with the sample coil and efficiently cool the coil to cryogenic temperatures without interfering with the1H resonance or RF profile.

REFERENCES:
patent: 2202700 (1940-05-01), Leeds
patent: 5493573 (1996-02-01), Kobayashi et al.
patent: 6231776 (2001-05-01), Flamm
patent: 6307371 (2001-10-01), Zeiger

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