PT Unknown AU Verevkin, A Gershenzon, EM Gol'tsman, GN Ptitsina, NG Chulkova, GM Smirnov, KS Sobolewski, R TI Direct measurements of energy relaxation times in two-dimensional structures under quasi-equilibrium conditions SE Mater. Sci. Forum PY 2002 BP 107 EP 116 VL 384-3 DE 2DEG; AlGaAs/GaAs AB A new microwave technique was successfully applied for direct studies of energy relaxation times in two-dimensional AlGaAs/GaAs structures under quasi-equilibrium conditions in the nanosecond and picosecond time scale. We report our results of energy relaxation time measurements in the temperature range 1.6-50 K, in quantum Hall effect regime in magnetic fields up to 4 T. ER