supported by the National Natural Science Foundation of China(10833007,10973042,11073058,11073006,40804034);National Basic Research Program of China(2011CB811400);Key Laboratory of Dark Matter and Space Astronomy,Chinese Academy of Sciences(2010DP173032)
With RHESSI data from five solar flares taken from beginning to end,we investigate the power conversion factorμdefined as the ratio of the time derivative of total thermal energy(ERHESSI+Erad+Econd)and the kinetic po...