A rasterization-based ray-tracing method for laser-plasma interactions

doi:10.1017/hpl.2025.22

2025-06-18

DOI：10.1017/hpl.2025.22

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摘要

En 中文

本文介绍了一种新颖的适用于各种梯度折射率材料（尤其是等离子体）的射线追踪方法。所提出的方法利用自适应步长Runge-Kutta积分计算射线轨迹，同时采用一项创新的栅格化步骤用于射线能量沉积。通过消除射线必须终止于单元界面的要求——这是早期单元受限方法固有的局限性——射线运动的数值公式不再依赖于特定的域几何形状。这促进了一种统一且简洁的追踪方法，兼容激光-等离子体模拟中所有常用的曲线坐标系，而这些坐标系在单元受限框架下此前要么不受支持，要么过于复杂。数值实验证明了该算法在捕获不同维度（包括降维平面、柱面和球面坐标系）下的各种射线物理现象时的稳定性和通用性。我们预期，基于栅格化的方法将为开发适用于广泛流体模拟和合成光学诊断的通用射线追踪工具包铺平道路。

Keyword:

geometric optics

inertial confinement fusion

laser-produced plasmas

ray tracing

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期刊

High Power Laser Science and Engineering

IF:

5.7

论文数:

816

被引数:

1.9K

机构

university of science & technology of china, cas

学者数:

3.2W

论文数: 2.7W

被引数: 74

chinese academy of sciences

学者数:

56.7W

论文数: 45.0W

被引数: 704

引用论文

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