川. calculation of d D=ald 1.rF=R2=v∞ xp(4G/ RT D=Cavo exp(AG Pr)=aav expC(AH-TAS RT -aa vo exp(As e9x-4 RT T=PPP PI: probability of atom acquiring additional AG◆ Ⅲ.Calculation of D 1. 2. 2 D =a ) ( ) exp( ) exp( * * 2 * 2 RT H T S a RT D a G o o −  −   =  − =  exp( ) exp( ) * * 2 RT H R S a o =    − exp( ) * 1 2 RT PP G o  = = −  = P1 P2 P3 P1 : probability of atom acquiring additional  G