Ms. Xiaoyi Xie Profile

Xiaoyi Xie

at Shanghai Institute of Optics and Fine Mechanics

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Proceedings Article | 1 August 2017 Paper

DKDP crystal growth controlled by cooling rate

Xiaoyi Xie, Hongji Qi, Jianda Shao

Proceedings Volume 10339, 103390W (2017) https://doi.org/10.1117/12.2269743

KEYWORDS: Crystals, Laser crystals, Potassium

Read Abstract +

The performance of deuterated potassium dihydrogen phosphate (DKDP) crystal directly affects beam quality, energy and conversion efficiency in the Inertial Confinement Fusion（ICF）facility, which is related with the initial saturation temperature of solution and the real-time supersaturation during the crystal growth. However, traditional method to measure the saturation temperature is neither efficient nor accurate enough. Besides, the supersaturation is often controlled by experience, which yields the higher error and leads to the instability during the crystal growth. In this paper, DKDP solution with 78% deuteration concentration is crystallized in different temperatures. We study the relation between solubility and temperature of DKDP and fit a theoretical curve with a parabola model. With the model, the measurement of saturation temperature is simplified and the control precision of the cooling rate is improved during the crystal growth, which is beneficial for optimizing the crystal growth process.

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