Effect of cooling rate on layering ICF cryogenic ice characterized by backlit shadowgraphy

Wang, Kai; Wei, Lin; Liu, Yuanqiong; Xie, Duan; Li, Jun; Kun-Quan, Ma; Yongjian, Tang; Hai-Le, Lei

doi:10.7498/aps.61.195204

Cited by 8 publications

(1 citation statement)

References 21 publications

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“…Analyzing the image we can obtain information such as the uniformity, thickness and inner surface roughness of the D 2 layer in the great circular plane perpendicular to the optical axis [21]. First obtain the curve of the interface position corresponding to the ice layer as a function of the circumferential angle, and then perform Fourier expansion on it to obtain the mode-power spectra characteristic parameters of the D 2 layer in the great circle plane perpendicular to the optical axis, thereby obtaining the D 2 layer related information.…”

Section: Layer Characterizationmentioning

confidence: 99%

Study on the growth and redistribution of deuterium–deuterium layer driven by temperature gradient

Tao¹,

Wu²,

Dai³

et al. 2022

Nucl. Fusion

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We report results of crystal growth, layering of the deuterium-deuterium (D2) layers in cylindrical cryogenic targets. For the first time, we realized the global coverage of the D2 layer on the inner surface of the capsule through the crystal growth of D2 ice, and the control of the temperature field without the infrared radiation, foam lining, and magnetic field. Analysis of the image of X-ray phase contrast imaging shows that the thickness of the D2 layer is about 36.53 μm, and the inner surface roughness is 3.23 μm. The finite element method is applied to simulate the temperature field of the target, and the phase transition process of D2, revealing the mechanism of D2 covering the inner surface of the capsule. These initial experiments provide a new vision and method for exploring and achieving the pure crystal growth as well as layering of D2 without operation of radioactive tritium.

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Section: Layer Characterizationmentioning

confidence: 99%

Study on the growth and redistribution of deuterium–deuterium layer driven by temperature gradient

Tao¹,

Wu²,

Dai³

et al. 2022

Nucl. Fusion

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Study on the morphology of liquid–gas interface inside inertial confinement fusion target under the condition of temperature gradient based on Young–Laplace equation

Yao

Zhang

2023

Physics of Fluids

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This study investigates the morphology of the liquid–gas interface inside inertial confinement fusion targets with temperature gradients from the perspective of force balance. The effects of contact angle, liquid volume, temperature gradient, and target size on the interface morphology are discussed. The filling of the fuel and the preparation of the ice layer inside the target are carried out near the deuterium–deuterium triple point at 18.71 K, accompanied by temperature gradient distributions of different magnitudes. The morphology of the liquid–gas interface has a significant impact on the subsequent laser experiments. The differential equation for calculating the morphology of the liquid–gas interface under non-uniform temperature field is derived based on the Young–Laplace equation. In order to verify the accuracy and applicability of the model as well as to provide guidance for practical applications such as process optimization, experimental data within a temperature gradient range of 0.69–1.38 K/cm during the fuel filling process were selected. Image processing techniques, including denoising and edge detection, were applied to the experimental images. The obtained structured data were compared with the numerical solutions of the equation for the liquid–gas interface morphology. The accuracy of the equation was verified by the results. Based on this, the morphology of the liquid–gas interface of deuterium–deuterium inside targets under different experimental conditions was calculated. It was found that a smaller target radius, higher filling temperature, smaller contact angle, and larger temperature gradient are more conducive to subsequent experiments.

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Thermal Simulations of the Hohlraum Cryogenic Target: Low-Mode Control and Parameter Optimization

Huang

Peng

Zhou

et al. 2015

Fusion Science and Technology

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Effect of cooling rate on layering ICF cryogenic ice characterized by backlit shadowgraphy

Cited by 8 publications

References 21 publications

Study on the growth and redistribution of deuterium–deuterium layer driven by temperature gradient

Study on the growth and redistribution of deuterium–deuterium layer driven by temperature gradient

Study on the morphology of liquid–gas interface inside inertial confinement fusion target under the condition of temperature gradient based on Young–Laplace equation

Thermal Simulations of the Hohlraum Cryogenic Target: Low-Mode Control and Parameter Optimization

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