A method of nonstationary heat flux calculation using the signal of a sensor based on anisotropic bismuth single-crystal thermoelements

We propose a method for calculating nonstationary heat fluxes using the electric-response signal of a sensor based on anisotropic bismuth single-crystal thermoelements. Using this method, it is possible to approximately calculate the heat flux during a period of time from $\sim$1 $\mu$s to the attainment of a stationary thermal regime. Tests showed that the monitoring of short-term ($t\sim$ 1–10 ms) heat fluxes by bismuth-crystal-based sensors with a crystal length to thickness ratio of above 25 ensures a calculation error not exceeding several percent.