Two-dimensional monitoring of a laser– solid x-ray source spot via penumbral coded aperture imaging technique
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Two-dimensional monitoring of a laser– solid x-ray source spot via penumbral coded aperture imaging technique
- 发表刊物：
- Review of Scientific Instruments
- 摘要：
- The uncertainties of spot size and position need to be clarified for x-ray sources as they can affect the detecting precision of the x-ray probe
beam in applications such as radiography. In particular, for laser-driven x-ray sources, they would be more significant as they influence the
inevitable fluctuation of the driving laser pulses. Here, we have employed the penumberal coded aperture imaging technique to diagnose the
two-dimensional spatial distribution of an x-ray emission source spot generated from a Cu solid target irradiated by an intense laser pulse.
Taking advantage of the high detection efficiency and high spatial resolution of this technique, the x-ray source spot is characterized with
a relative error of ∼5% in the full width at half maximum of the intensity profile in a single-shot mode for general laser parameters, which
makes it possible to reveal the information of the unfixed spot size and position precisely. Our results show the necessity and feasibility of
monitoring the spot of these novel laser-driven x-ray sources via the penumbral coded aperture imaging technique.
- 合写作者：
- Xue-Jie Bai, Yi-Hong Yan, Hong-Yi Lei, Fang-Zheng Sun, Tian-Ze Wang, Chang-Qing Zhu, Jun-Hao Tan, Guang Hu, Yan-Fei Li, Jing-Long Ma, Guo-Qian Liao, Zhe Zhang, Hua-Si Hu, and Yu-Tong Li
- 卷号：
- 93
- 页面范围：
- 043104
- 是否译文：
- 否
- 发表时间：
- 2022-04-19