A multi-material diagnosis method based on high-energy proton radiography

IF 4.8 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Matter and Radiation at Extremes Pub Date : 2023-05-26 DOI:10.1063/5.0138725

Feng Chen, Haibo Xu, Junhui Shi, Xinge Li, Na Zheng

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引用次数: 0

Abstract

Diagnosis of fluids is extremely significant at high temperatures and high pressures. As an advanced imaging technique, high-energy proton radiography has great potential for application to the diagnosis of high-density fluids. In high-energy proton radiography, an angular collimator can control the proton flux and thus enable material diagnosis and reconstruction of density. In this paper, we propose a multi-material diagnostic method using angular collimators. The method is verified by reconstructing the density distribution from the proton flux obtained via theoretical calculations and numerical simulations. We simulate a 20 GeV proton imaging system using the Geant4 software toolkit and obtain the characteristic parameters of single-material objects. We design several concentric spherical objects to verify the method. We discuss its application to detonation tests. The results show that this method can determine the material and boundary information about each component of a multi-material object. Thus, it can be used to diagnose a mixed material and reconstruct densities in a detonation.

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基于高能质子放射成像的多材料诊断方法

在高温高压下对流体的诊断是非常重要的。高能质子放射成像作为一种先进的成像技术，在高密度流体的诊断中具有很大的应用潜力。在高能质子放射照相中，角准直器可以控制质子通量，从而实现材料诊断和密度重建。本文提出了一种基于角准直器的多材料诊断方法。根据理论计算和数值模拟得到的质子通量重建密度分布，验证了该方法的有效性。利用Geant4软件对20 GeV质子成像系统进行了仿真，得到了单材料物体的特征参数。我们设计了几个同心球面物体来验证该方法。讨论了它在爆轰试验中的应用。结果表明，该方法可以确定多材料物体各组成部分的材料和边界信息。因此，它可以用来诊断混合材料和重建密度在爆炸。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Matter and Radiation at Extremes Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

8.60

自引率

9.80%

发文量

160

审稿时长

15 weeks

期刊介绍： Matter and Radiation at Extremes (MRE), is committed to the publication of original and impactful research and review papers that address extreme states of matter and radiation, and the associated science and technology that are employed to produce and diagnose these conditions in the laboratory. Drivers, targets and diagnostics are included along with related numerical simulation and computational methods. It aims to provide a peer-reviewed platform for the international physics community and promote worldwide dissemination of the latest and impactful research in related fields.