Open AccessFORMATION OF STEP DENSITY SHOCK WAVES ON VICINAL NaCl(100) GROWTH SURFACES
Author(s) -
Oleksandr Kulyk,
Oksana Podshyvalova,
Oksana L. Andrieieva,
В. Ф. Ткаченко,
V. A. Gnatyuk,
Toru Aoki
Publication year - 2022
Publication title -
problems of atomic science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 17
eISSN - 1562-6016
pISSN - 1682-9344
DOI - 10.46813/2022-137-154
Subject(s) - vicinal , sawtooth wave , monatomic gas , shock wave , curvature , chemistry , crystal growth , surface (topology) , crystal (programming language) , materials science , crystallography , physics , thermodynamics , geometry , mathematics , organic chemistry , computer science , programming language , computer vision
The morphology of the growth surface near NaCl(100), formed during the pore motion in a crystal due to the temperature gradient, has been studied by the electron microscopic method of vacuum decoration. It is shown that at T = 950 K and ∆μ/kT = 4·10-3, the profile of the vicinal surface in the direction is represented by monoatomic steps, while in the direction, as the surface curvature increases, there is a grouping of steps with the formation of macrosteps – bunches of elementary steps separated by areas of atomically smooth terraces. The sawtooth dependence of the step density on the longitudinal coordinate is described by a particular solution of the Burgers equation for a shock wave. Data on the parameters of three shock waves and the time of their formation are obtained.