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Bai XJ, Yan YH, Lei HY, Sun FZ, Wang TZ, Zhu CQ, Tan JH, Hu G, Li YF, Ma JL, Liao GQ, Zhang Z, Hu HS, Li YT. Two-dimensional monitoring of a laser-solid x-ray source spot via penumbral coded aperture imaging technique. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2022; 93:043104. [PMID: 35489950 DOI: 10.1063/5.0082555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
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.
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Affiliation(s)
- Xue-Jie Bai
- Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yi-Hong Yan
- Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Hong-Yi Lei
- National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China
| | - Fang-Zheng Sun
- National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China
| | - Tian-Ze Wang
- National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China
| | - Chang-Qing Zhu
- National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China
| | - Jun-Hao Tan
- National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China
| | - Guang Hu
- Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yan-Fei Li
- Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jing-Long Ma
- National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China
| | - Guo-Qian Liao
- National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China
| | - Zhe Zhang
- National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China
| | - Hua-Si Hu
- Department of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yu-Tong Li
- National Laboratory for Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190, China
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