Quantitative Measurement of the Proportions of High-Order Harmonics for the 4B7B Soft-X-Ray Source at Beijing Synchrotron Radiation Facility

ZHU Tuo (朱托); SHANG Wanli (尚万里); ZHANG Wenhai (张文海); YANG Jiamin (杨家敏); et al.

doi:10.1088/1009-0630/15/12/06

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Plasma Science and Technology > 2013 > 15(12): 1194-1196. > DOI: 10.1088/1009-0630/15/12/06

ZHU Tuo (朱托), SHANG Wanli (尚万里), ZHANG Wenhai (张文海), YANG Jiamin (杨家敏), et al.. Quantitative Measurement of the Proportions of High-Order Harmonics for the 4B7B Soft-X-Ray Source at Beijing Synchrotron Radiation Facility[J]. Plasma Science and Technology, 2013, 15(12): 1194-1196. DOI: 10.1088/1009-0630/15/12/06

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Quantitative Measurement of the Proportions of High-Order Harmonics for the 4B7B Soft-X-Ray Source at Beijing Synchrotron Radiation Facility

1 Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China 2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

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Received Date: March 18, 2013

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Abstract

Abstract

A transmission grating coupled with an X-ray charge coupled device (CCD) is used to quantitatively measure the proportion of high-order harmonics of the soft-X-ray source of beam line 4B7B. The results show that the monochromatic X-ray has third-order and second-order harmonics. The proportion of second-order harmonic of 4B7B is less than 9.0% and the third- order harmonic is below 0.7% when no suppressing method is applied. When suppression methods are used, the proportion of second-order harmonic is less than 1.7% and the third-order harmonic is ignorable.
- quantitative measurement,
- high-order harmonics,
- suppressing method