抄録
Heat transfer into saturated He II was investigated in an experiment which simulates the use of He II as coolant for the stabilization of superconducting magnets. One must distinguish two critical values of the recovery heat flux (i.e. recovery from film boiling to non-boiling), namely for recovery from silent film boiling and recovery from noisy film boiling.
There are also two threshold values of the power of short-time heat pulse which trigger a transition from the non-boiling heat transfer into film-boiling. The increased cooling capacity of He II at about 1.9K seems to compensate for the reduction of the thermal parameters of the stabilizing material at the low temperature.
