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

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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.

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Fig. 1
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The source FWHM is 1.0 mm

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Authors and Affiliations

  1. Key Laboratory of Pulsed Power, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, 621900, China

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

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  1. Yi Wang
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  2. Zhi-Yong Yang
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  3. Xiao-Bing Jing
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  4. Qin Li
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  5. Heng-Song Ding
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  6. Zhi-Yong Dai
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Correspondence to Yi Wang.

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Wang, Y., Yang, ZY., Jing, XB. et al. Pinhole imaging to observe spatial jitters of a triple-pulse X-ray source on the Dragon-II LIA. NUCL SCI TECH 27, 110 (2016). https://doi.org/10.1007/s41365-016-0106-6

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  • DOI: https://doi.org/10.1007/s41365-016-0106-6

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