| 论文标题 |
Source reconstruction for neutron coded-aperture imaging: A sparse method |
| 作者 |
Dongming Wang, Huasi Hu, Fengna Zhang, Jia Qinggang |
| 发表/完成日期 |
2017-07-01 |
| 期刊名称 |
Review of Scientific Instruments |
| 期卷 |
88(8) |
| 相关文章 |
1.4996193_Source reconstruction for neutron coded-aperture imaging__A sparse method.pdf
|
| 论文简介 |
Abstract：
Neutron coded-aperture imaging has been developed as an important diagnostic for inertial fusion studies in recent decades. It is used to measure the distribution of neutrons produced in deuterium-tritium plasma. Source reconstruction is an essential part of the coded-aperture imaging. In this paper, we applied a sparse reconstruction method to neutron source reconstruction. This method takes advantage of the sparsity of the source image. Monte Carlo neutron transport simulations were performed to obtain the system response. An interpolation method was used while obtaining the spatially variant point spread functions on each point of the source in order to reduce the number of point spread functions that needs to be calculated by the Monte Carlo method. Source reconstructions from simulated images show that the sparse reconstruction method can result in higher signal-to-noise ratio and less distortion at a relatively high statistical noise level.
Dongming Wang1， Huasi Hu1,a)， Fengna Zhang1， and Qinggang Jia2
1 School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2 Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
(Received 29 December 2016; accepted 13 July 2017; published online 1 August 2017)
a)Author to whom correspondence should be addressed: huasi hu@mail.xjtu.edu.cn.
http://doi.org/10.1063/1.4996193 |
(创新港)
