Dv. Volosnikov et al., A method of controllable pulse-heating for investigation of properties of short-lived liquids, INSTR EXP R, 43(1), 2000, pp. 134-139
A method of controlled pulse heating of low inertia thermal probe immersed
into the liquid under study with a temperature T-0 is described. The contro
l system provides a "temperature plateau"-type heating mode, which consists
in a rapid (t(1) similar to 10 mu s) increase in the mass-average probe te
mperature (T) over bar to a chosen value T-pl >> T-0 and maintains this val
ue for a certain time interval (t(2) similar to 10(3)-10(2) mu s) to within
1 K. Thermal effusivity of the substance, in relative units, is determined
from the value of its internal heat flux. Sensitivity to changes in the th
ermal effusivity of a reference substance was 10(-4). Due to the short puls
e length and fine tuning of the T-pl value, the method allows one to conduc
t step-by-step scanning of "instantaneous" thermal properties of a substanc
e in the region of its short-lived states.