Room-Temperature Colorability of Alkali-Doped KBr

The results reported in this paper show that lithium impurities stabilize interstitial halogen atoms also at 300 °K in the form of $V\left(306\right)\mathrm{}$ centers. The number of stabilized interstitials is limited by the diffusion of anion vacancies and their recombination with the interstitials. As a consequence, lithium impurities introduce a rapidly saturating first stage in the $F$-center growth curve.