Chinese Physics B, volume 30, issue 5, pages 50701

Phase transition of shocked water up to 6 GPa: Transmittance investigation*

Lang Wu
Yue Hong Ren
Wen-qiang Liao
Xi Chen Huang
Fu-sheng Liu
Ming Jian Zhang
Yan-Yun Sun
Publication typeJournal Article
Publication date2021-05-01
scimago Q3
wos Q2
SJR0.350
CiteScore2.8
Impact factor1.5
ISSN16741056, 20583834
General Physics and Astronomy
Abstract

The phase transition behaviors of the shocked water are investigated by employing an optical transmittance in-situ detection system. Based on the light scattering theory and phase transformation kinetics, the phase transition mechanism of the water under multiple shocks is discussed. The experimental data indicate that the evolution of the transmittance of the shocked water can be broadly divided into three stages: relaxation stage, decline stage, and recovery stage. In the early stage of the phase transition, the new phase particles began to form around the quartz/window interface. It should be mentioned that the water/ice phase boundary seems to move toward the liquid region in one experiment of this work. Due to the new phase core being much smaller than the wavelength of the incident light, the transmittance of the sample within the relaxation stage remains steady. The decline stage can be divided into the rapid descent stage and the slow descent stage in this work, which is considered as the different growth rates of the new phase particle under different shock loadings. The recovery stage is attributed to the emergence of the new phase particles which are bigger than the critical value. However, the influence of the size growth and the population growth of the new phase particles on the transmittance restrict each other, which may be responsible for the phenomenon that the transmittance curve does not return to the initial level.

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