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Numerical investigation of radiation ablation and acceleration of high-density carbon foils

Published online by Cambridge University Press:  09 October 2020

Peng Chen ,
Ronghao Hu Open the ORCID record for Ronghao Hu [Opens in a new window] ,
Hao Zhou ,
Zhihao Tao ,
Guilong Gao ,
Kai He ,
Tao Wang ,
Jinshou Tian ,
Tao Yi  and
Meng Lv
Peng Chen
Affiliation:
College of Physics, Sichuan University, Chengdu610065, China Key Laboratory of High Energy Density Physics and Technology, Ministry of Education, Sichuan University, Chengdu610064, China Key Laboratory of Radiation Physics and Technology, Ministry of Education, Sichuan University, Chengdu610064, China
Ronghao Hu*
Affiliation:
College of Physics, Sichuan University, Chengdu610065, China Key Laboratory of High Energy Density Physics and Technology, Ministry of Education, Sichuan University, Chengdu610064, China Key Laboratory of Radiation Physics and Technology, Ministry of Education, Sichuan University, Chengdu610064, China
Hao Zhou
Affiliation:
College of Physics, Sichuan University, Chengdu610065, China Key Laboratory of High Energy Density Physics and Technology, Ministry of Education, Sichuan University, Chengdu610064, China Key Laboratory of Radiation Physics and Technology, Ministry of Education, Sichuan University, Chengdu610064, China
Zhihao Tao
Affiliation:
College of Physics, Sichuan University, Chengdu610065, China Key Laboratory of High Energy Density Physics and Technology, Ministry of Education, Sichuan University, Chengdu610064, China Key Laboratory of Radiation Physics and Technology, Ministry of Education, Sichuan University, Chengdu610064, China
Guilong Gao
Affiliation:
Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an, Shanxi710119, China
Kai He
Affiliation:
Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an, Shanxi710119, China
Tao Wang
Affiliation:
Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an, Shanxi710119, China
Jinshou Tian
Affiliation:
Key Laboratory of Ultrafast Photoelectric Diagnostics Technology, Xi'an Institute of Optics and Precision Mechanics (XIOPM), Chinese Academy of Sciences (CAS), Xi'an, Shanxi710119, China
Tao Yi
Affiliation:
Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang, Sichuan621900, China
Meng Lv
Affiliation:
College of Physics, Sichuan University, Chengdu610065, China Key Laboratory of High Energy Density Physics and Technology, Ministry of Education, Sichuan University, Chengdu610064, China Key Laboratory of Radiation Physics and Technology, Ministry of Education, Sichuan University, Chengdu610064, China
*
Author for correspondence: R. Hu, College of Physics, Sichuan University, Chengdu610065, China. E-mail: ronghaohu@scu.edu.cn
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Abstract

The ablation and acceleration of diamond-like high-density carbon foils irradiated by thermal X-ray radiations are investigated with radiation hydrodynamics simulations. The time-dependent front of the ablation wave is given numerically for radiation temperatures in the range of 100–300 eV. The mass ablation rates and ablation pressures can be derived or implied from the coordinates of ablation fronts, which agree well with reported experiment results of high-density carbon with radiation temperatures Trad in the range of 160–260 eV. It is also found that the $T_{{\rm rad}}^3$ scaling law for ablation rates does not apply to Trad above 260 eV. The trajectories of targets and hydrodynamic efficiencies for different target thicknesses can be derived from the coordinates of ablation fronts using a rocket model and the results agree well with simulations. The peak hydrodynamic efficiencies of the acceleration process are investigated for different foil thicknesses and radiation temperatures. Higher radiation temperatures and target thicknesses result in higher hydrodynamic efficiencies. The simulation results are useful for the design of fusion capsules.

Keywords

High-density carboninertial confinement fusionradiation ablation
Type
Research Article
Information
Laser and Particle Beams , Volume 38 , Issue 4 , December 2020 , pp. 239 - 243
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Copyright
Copyright © The Author(s) 2020. Published by Cambridge University Press

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