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X射线强度关联干涉测量能谱展宽校正

Energy Spectrum Broadening Correction in X-Ray Interferometry via Intensity Correlation

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摘要

X射线强度关联干涉测量为实现高分辨率脉冲星信息获取提供一条可行的技术途径,但现有的X射线探测器能量分辨率有限,探测到的X射线信号有一定能谱展宽,从而导致测量精度降低。为解决这一问题,基于不同能量相干曲线之间的缩放关系,提出一种强度关联干涉测量能谱展宽校正方法。通过仿真分析了校正前后的测量误差,探讨噪声对该校正方法的影响,并进行了可见光波段的模拟干涉测量实验,结果表明校正后的测量值与理论值相符,从而验证了该方法的有效性。

Abstract

X-ray intensity correlated interferometry provides a feasible technical way to realize high-resolution pulsar information acquisition。 However, the energy resolution of existing X-ray detectors is limited, and the detected X-ray signals have spectrum broadening to some extent, which may result in measurement accuracy decrease。 To solve this problem, a method is proposed to correct the spectrum broadening in intensity correlated interferometry based on the scaling relationship between the coherence curves at different energies。 The measurement errors before and after modification are analyzed by simulation, and the influence of noise on the correction is discussed。 A simulated interferometry experiment is carried out with the visible light。 The results show that the measurement values after correction are consistent with the theoretical ones, thus the effectiveness of the method is validated。

补充资料

DOI:

所属栏目:X射线光学

基金项目:国家重点研发计划、国家自然科学基金重大项目;

收稿日期:2019-05-13

修改稿日期:2019-06-21

网络出版日期:2019-10-01

作者单位    点击查看

杨善初:中国科学院上海光学精密机械研究所量子光学重点实验室, 上海 201800中国科学院大学, 北京 100049
喻虹:中国科学院上海光学精密机械研究所量子光学重点实验室, 上海 201800
陆荣华:中国科学院上海光学精密机械研究所量子光学重点实验室, 上海 201800
谈志杰:中国科学院上海光学精密机械研究所量子光学重点实验室, 上海 201800中国科学院大学, 北京 100049
韩申生:中国科学院上海光学精密机械研究所量子光学重点实验室, 上海 201800

联系人作者:喻虹(yuhong@siom.ac.cn)

备注:国家重点研发计划、国家自然科学基金重大项目;

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引用该论文

Yang Shanchu,Yu Hong,Lu Ronghua,Tan Zhijie,Han Shensheng。 Energy Spectrum Broadening Correction in X-Ray Interferometry via Intensity Correlation[J]。 Acta Optica Sinica, 2019, 39(10): 1034001

杨善初,喻虹,陆荣华,谈志杰,韩申生. X射线强度关联干涉测量能谱展宽校正[J]. 光学学报, 2019, 39(10): 1034001

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