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CMR 700 K

NW14 - Cell 3

CMR 700 K

Hardware
700 MHz spectrometer for solid-state NMR

This 700 MHz NMR system is based on a Magnex wide bore magnet and a console designed and constructed by the center. It has three RF channels and is equipped with a 460 GHz gyrotron, a heat exchanger and cryogenic exchange system for low-temperature DNP.

Console
Three transmitter channels

Per channel fully programable frequency modulator with sub milliHz resolution

Per channel fully programable phase modulator with 0.1 degree resolution

Per channel fully programable amplitude modulator with 0.05% resolution

Four channel pulse programmer with 20 nsec resolution

Double buffered averager

Temperature controller with 0.1 degree Celsius resolution

Power Amplifiers
(1) AMT 3155 150 W 700 MHz (1H)
(2) AMT 3304C 400 W 30-310 MHz (X)

Magnet
Magnex 700/89

RRI 43 channel shims

Probes
Custom-built 3.2mm triple channel DNP probe with integral corrugated waveguide and vacuum jacketed transfer lines for bearing, drive and variable temperature gas.

Software
LINUX operating system

RNMR data acquisition software

Data may be exported in various formats including NMRPipe, SPARKY, Bruker, Felix, and ASCII