Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (5): 110 doi: 10.1007/s41365-016-0106-6

• SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS • Previous Articles     Next Articles

Pinhole imaging to observe spatial jitters of a triple-pulse X-ray source on the Dragon-II LIA

Yi Wang, Zhi-Yong Yang, Xiao-Bing Jing, Qin Li, Heng-Song Ding, Zhi-Yong Dai   

  1. Key Laboratory of Pulsed Power, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China
  • Contact: Yi Wang E-mail:wangyi_caep@163.com
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Yi Wang, Zhi-Yong Yang, Xiao-Bing Jing, Qin Li, Heng-Song Ding, Zhi-Yong Dai. Pinhole imaging to observe spatial jitters of a triple-pulse X-ray source on the Dragon-II LIA.Nuclear Science and Techniques, 2016, 27(5): 110     doi: 10.1007/s41365-016-0106-6
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Abstract:

In high-energy flash radiography, scattered photons degrade the acquiring image, which limits the resolving power of interfaces and density of dense object. The application of large anti-scatter grid can reduce the scattered photons remarkably, but this requires a stable source position in order to reduce the loss of signal photons in the grid structure. The pinhole imaging technique is applied to observe spatial jitters of a triple-pulse radiographic source of a linear induction accelerator. Numerical simulations are conducted to analyze the imaging performance with the same or close parameters of the pinhole object and experimental alignment. Experiments are carried out to observe spatial jitters of the source between different measurements. Deviations of the source position between different pulses are measured in each experiment.

Key words: Spatial jitter, X-ray source, Pinhole imaging, Linear induction accelerator