Pyrometric temperature controller for million degree per second heating

A high-power proportional temperature controller, using a fast infrared pyrometer, has been developed to change and control the temperature of metallic ribbon samples with microsecond response. The apparatus provides uniform and controlled heating for time-resolved x-ray scattering studies of structural phase transitions. When high-power pulse heating is used, the system is capable of increasing the sample temperature at rates in excess of 106 K/s, without overshoot and with subsequent control to ±1 K at temperatures as low as 650 K.