  Experimental and computer-modeling studies of spectral properties of
crystalline AgCl doped with metal bismuth or bismuth chloride are performed.
Broad near-IR luminescence band in the 0.8--1.2mkm range with time dependence
described by two exponential components corresponding to the lifetimes of 1.5
and 10.3mks is excited mainly by 0.39--0.44mkm radiation. Computer modeling of
probable Bi-related centers in AgCl lattice is performed. On the basis of
experimental and calculation data a conclusion is drawn that the IR
luminescence can be caused by Bi^+ ion centers substituted for Ag^+ ions.
