By microwave absorption and dielectric spectrum measurement technique,the decay spectra of the free and shallow-trapped photoelectrons in cubic AgCl microcrystals doped with [Ru(CN)6]4-are measured.The results show that the time when the amount of free photoelectrons arrives to its maximum becomes longer with doping concentration increasing after exposure,and the free photoelectron decay time increases from 157 ns to 1 071 ns.By analyzing the photoelectron decay curve,it is also obtained that th...