Reflection of light and heavy holes from a linear potential barrier

In this paper we study reflection of holes in direct-band semiconductors from the linear potential barrier. It is shown that light-heavy hole transformation matrix is universal. It depends only on a dimensionless product of the light hole longitudinal momentum and the characteristic length determined by the slope of the potential and doesn't depend on the ratio of light and heavy hole masses, provided this ratio is small. It is shown that the transformation coefficient goes to zero both in the limit of small and large longitudinal momenta, however the phase of a reflected hole is different in these limits. An approximate analytical expression for the light-heavy hole transformation coefficient is found.Comment: 6 pages, 2 figure

MODERNIZATION OF STATIONARY FISHING GEAR AS A FACTOR IN INCREASING THE EFFICIENCY OF FISHING IN THE SHALLOW WATERS OF THE NORTH CASPIAN

In the last 15-20 years of the twentieth century in the Volga-Caspian region, the fishing has changed dramatically fishing conditions that have led to considerable changes of the fisheries in this region. Venterny fishing in the region has a high selectivity of fishing gear and the quality of fish caught. To improve fishing Venter is currently at the Department of Industrial Fisheries ASTU developed new designs. This significantly increases the catchability of fish venternymi plants