Method and apparatus for conducting variable-temperature solid s

Details Method and apparatus for conducting variable-temperature solid s Method and apparatus for conducting variable-temperature solid s

1989-04-14

1990-07-10

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324307, G01R 3320

Patent

active

049409425

ABSTRACT:
A technique and design for variable-temperature magnetic resonance spectroscopy. Designs utilizing a separate gas for control of sample temperature confine temperature gradients away from the sample. Annular seals isolate a sample gas chamber along a rotor and avoid gas mixing and other sample temperature effects. Improved resolution by avoiding temperature gradients and independence of rotational speed from sample temperature is provided.

REFERENCES:
patent: 4301410 (1981-11-01), Wind et al.
patent: 4306878 (1981-12-01), Brown et al.
patent: 4510450 (1985-04-01), Brown
Mathias et al., "A Low-Volume Insert For Solid State Magic Angle Spinning NMR of Small Samples," J. Magn. Reson. V 77 (3) pp. 566-568.
Exxon Chem. Co., "A Cylindrical Rotor System for Solid-State NMR in a Controlled Atmosphere", J. Magn. Reson. V 69 (3), pp. 527-530.
Mueller et al., "An Application of Solid-State Magic-Angle Spinning Aluminum-27 NMR to the Study of Cement Hydration", J. Magn. Reson. V 57 (1), pp. 152-156, 1984.

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