Analysis of the concentration dependence of KCl:Ag optical absorption by random-walk method

The absorption spectra of KCl:Ag single crystals with varied concentration of Ag+ ions are analyzed by the multivariable random-walk method. It is shown that intracenter absorption and charge-transfer with formation of perturbed-impurity centers of different coordination are responsible for the absorption event within the spectral range 6.35–5.3 eV.