抄録
The purpose of this research was to investigate the ice growth of a single crystal in three dimensions. Three-dimensional pattern of ice crystal growth in supercooled water was observed using Mach-Zehnder spectro-interferometer. Temperature was varied from -0.3 to -1.6°C. It was found that the ice crystal began to grow freely as a single crystal at the tip of the capillary tube in supercooled water at this range. The interferometer enables measurement of the thickness of crystal by counting the number of interference fringes. Sectional plane of tip of dendrite was obtained from the results and fits half parabola very c1osely. The coefficient of squared term of a half parabola was found to be depending upon the degree of supercooling and time. The coefficient, a, of a half parabola varied in time but at quasi steady state it was found to be depending only upon the degree of supercooling. Furthermore, the thickness of ice crystal was measured and the growth velocity along c-axis was calculated. It was found to be independent of the degree of supercooling but dependent on time. The equation on crystal growth in c-axis was obtained, experimentally.
