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基于Kirkpatrick-Baez镜聚焦的X射线小角散射显微层析成像

Small-Angle X-Ray Scattering Tomography Based on Micro-Focusing Kirkpatrick-Baez Mirrors

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摘要

X射线小角散射显微层析成像(SAXS-CT)是一种无损的结构表征技术, 用于研究非均匀物质纳米结构信息及其空间分布; 在上海同步辐射光源(SSRF)设计并搭建了基于Kirkpatrick-Baez(KB)镜聚焦的SAXS-CT成像系统, 并选取毛竹和注塑聚乳酸样品进行实验验证。结果表明: 该SAXS-CT成像系统的聚焦光斑尺寸可以达到20 μm以下; 对于毛竹样品, 得到了其内部维管束和薄壁细胞的位置分布及散射差异, 同时获取了内部纳米纤维的取向特点; 对于注塑聚乳酸样品, 发现其内部片晶结构具有分层分布特征, 获取了片晶结构的分布图像以及长周期分布图像; 实验结果验证了该SAXS-CT成像系统的可靠性及实用性。

Abstract

Small-angle X-ray scattering tomography (SAXS-CT) is a non-destructive structural characterization method for nanostructure analysis of heterogeneous materials and its space distribution. The SAXS-CT system based on micro-focusing Kirkpatrick-Baez (KB) mirrors is developed at Shanghai Synchrotron Radiation Facility (SSRF). Samples of Phyllostachys edulis and injection-molded polylactic acid are chosen for experimental verification. The results show that the spot size of the SAXS-CT system can be focused below 20 μm. For the Phyllostachys edulis sample, the position distribution and scattering difference of vascular bundle and parenchyma cell, and the orientation characteristic of nano-fibers are obtained. For the injection-molded polylactic acid sample, the lamella structure inside the sample exhibits the layered distribution characteristic, and the distribution and long spacing of lamella is acquired. The experimental results confirm the reliability and practicality of the SAXS-CT system.

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中图分类号:O434.19

DOI:10.3788/AOS201838.0134001

所属栏目:X射线光学

基金项目:国家重点研发计划(2017YFA0403801, 2017YFA0206004)、国家自然科学基金(U1732123, U1232205, 11275257, 11405260, 11405261)

收稿日期:2017-07-17

修改稿日期:2017-09-07

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作者单位    点击查看

胡涛:中国科学院上海应用物理研究所, 上海 201204中国科学院大学, 北京 100049
滑文强:中国科学院上海应用物理研究所, 上海 201204
王玉丹:中国科学院上海应用物理研究所, 上海 201204
王玉柱:中国科学院上海应用物理研究所, 上海 201204
周平:中国科学院上海应用物理研究所, 上海 201204
洪春霞:中国科学院上海应用物理研究所, 上海 201204
边风刚:中国科学院上海应用物理研究所, 上海 201204中国科学院大学, 北京 100049
肖体乔:中国科学院上海应用物理研究所, 上海 201204中国科学院大学, 北京 100049

联系人作者:胡涛(hutao@sinap.ac.cn)

备注:胡涛(1990-), 男, 博士研究生, 主要从事X射线成像光学方面的研究。E-mail: hutao@sinap.ac.cn

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引用该论文

Hu Tao,Hua Wenqiang,Wang Yudan,Wang Yuzhu,Zhou Ping,Hong Chunxia,Bian Fenggang,Xiao Tiqiao. Small-Angle X-Ray Scattering Tomography Based on Micro-Focusing Kirkpatrick-Baez Mirrors[J]. Acta Optica Sinica, 2018, 38(1): 0134001

胡涛,滑文强,王玉丹,王玉柱,周平,洪春霞,边风刚,肖体乔. 基于Kirkpatrick-Baez镜聚焦的X射线小角散射显微层析成像[J]. 光学学报, 2018, 38(1): 0134001

被引情况

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【2】李卓,李宾. 一种新型keV波段超高分辨光栅光谱仪设计. 光学学报, 2019, 39(8): 822001--1

【3】李俊琴,陈振华,赵子龙,邹鹰,王勇,邰仁忠. 基于荧光发射的低原子序数软X射线吸收谱方法. 光学学报, 2019, 39(10): 1034002--1

【4】李闯,刘孟廷,张增艳,薛莲,张艳,罗红心,李炯,李中亮. 同步辐射聚焦光束能量带宽的检测方法. 光学学报, 2020, 40(19): 1934001--1

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