[en] The state of energetic particles in solid materials, before the particles have reached equilibrium with their surroundings, is considered to determine the speed with which they lose their kinetic energy and the depth where they lose it. (U.S.)
Datz, S. (ed.); p. 125-139; 1975; Plenum Publishing Corp; New York; 3. international conference on atomic collisions in solids; Gatlinburg, Tennessee, USA; 23 Sep 1973