DISCRETE VELOCITIES OF SLOW SOLITON-LIKE EXCITATIONS IN A SINGLE CRYSTAL OF SILICON (COMPARISON OF EXPERIMENTAL RESULTS WITH THE DATA OF OTHER WORKS)

摘要

Single exciting pulse with a threshold about (10 - 100) kW/cm~2 produces in solids the whole series from i=30 of solitary waves - soliton-like excitations. They are spread on a stuff with constant velocity U_i, the values by which one "are quantized" - decrease twice for each subsequent (i+1)-th component, and all - on nine orders, starting from a longitudinal speed of sound v_l. With the purpose of confirmation and the study of this fundamental property are analyzed results for single-crystal silicon obtained by different methods and in two different labs (particulate on the same sample). They fall into to values of velocity of 18-th component of Wave of Change in Reflection and Conduction (WCRC) in an interval ～ 4 cm/sec (measurement are conducted in Lebedev Physical Institute) and 10-, 11-, 12- and 14-th WCRC components, of values, relating an interval, from ～1000 up to～50 cm/sec (these data are obtained by us from measurements of heat conduction, made in Institute of General Physics). All obtained data appear well coordinated if to use for coordinating expression, which was offered in our work, namely, U_i ≈v_l/(2)~i.