SYSTEM OF ACTIVE REGULATION OF THE TEMPERATURE AND TEMPERATURE-GRADIENT IN NUCLEAR-MAGNETIC-RESONANCE SENSORS

An active system of temperature regulation and temperature gradient in a sample on the example NMR sensor is described in this work. By supp orting the given average temperature, the system of temperature-stabil ization allows one to set and supervise the size and direction of the temperature gradient along a sample. The temperature of a sample is ma intained with on accuracy of about +/-0.1 degrees C in a temperature i nterval of -150 to +200 degrees C with a longitudinal temperature grad ient no more than +0.2 degrees C. The value of the temperature gradien t is established in the range of 0 degrees to 10 degrees C/cm in both directions.