[en] The peculiarities of nonradiative and irradiative relaxations with radiation defects creation in alkaline halogen crystals (AHC) (NaCl, KCl, CsBr, K Br, KI, RbI, CsI and Na Br) at lattice symmetry lowering bu uniaxial elastic deformation were investigated with experimental methods of luminescence spectroscopy. Energy of activation of STE luminescence suppression in AHC is experimentally estimated at low temperature uniaxial deformation: the increase in value of activation energy is observed in the range KBr(Cs)→NaCl→KI→ Na Br→CsBr→RbI; it is established, that in Sc I crystals (ε219-223 meV) and KBr (ε=26-33 meV) activation energy of STE nonradiative decay practically does not change, and for other crystal values of ε sharply increases. The effect of STE intrinsic luminescence strengthening in AH is interpreted on the basis of the potential barrier's growth, that share s radiative and nonradiative channels of STE decay. (author)