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1. 复旦大学核科学与技术系
2. 复旦大学现代物理研究所
3. 中国工程物理研究院激光聚变研究中心
Published:01 August 2013
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[1]王敏,李永强,刘学,李忻忆,沈皓.核微探针技术在ICF靶丸研究中的应用[J].核技术,2013,36(08):39-44.
WANG Min, LI Yongqiang, LIU Xue, et al. Application of nuclear microprobe in the research of ICF targets[J]. Nuclear techniques, 2013, 36(8): 080204
[1]王敏,李永强,刘学,李忻忆,沈皓.核微探针技术在ICF靶丸研究中的应用[J].核技术,2013,36(08):39-44. DOI: 10.11889/j.0253-3219.2013.hjs.36.080204.
WANG Min, LI Yongqiang, LIU Xue, et al. Application of nuclear microprobe in the research of ICF targets[J]. Nuclear techniques, 2013, 36(8): 080204 DOI: 10.11889/j.0253-3219.2013.hjs.36.080204.
利用核微探针系统
结合离子束分析技术
对ICF靶丸参数进行表征。采用质子激发X射线荧光分析(PIXE)测量靶丸掺杂元素钙(Ca)的空间分布
采用卢瑟福背散射(RBS)分析测量靶丸组成元素碳(C)、氧(O)的相对含量和空间分布
采用扫描透射离子显微术(STIM)获得靶丸面密度二维分布图像。该方法灵敏度高(可达到10 6量级)、无损
可以对靶丸中多种元素同时进行分析
不但可给出元素组成及含量信息
还可精确表征元素在空间中的分布信息
空间分辨率可达微米量级。
Background: Inertial Confinement Fusion(ICF) now is one of the fastest-growing major fields in the world
and the study mainly focuses on the measurement of ICF targets filled with deuterium and tritium gases
which is a major unresolved technical problem and seriously hamperes the development of target fabrication technology in China.Purpose: We use nuclear analytic techniques based on nuclear microprobe system to measure the parameters of ICF targets
including the structural elements’ content and distribution
the distribution of doped element and the distribution of density.Methods: Proton Induced X-ray Emission(PIXE) is utilized to measure the distribution of dopant element Ca in ICF targets doped with Ca or not.Rutherford Back Scattering(RBS) is utilized to measure the contents of C and O and the distributions in ICF targets.Scanning Transmission Ion Microscopy(STIM) is used to measure the distribution of density.Results: The PIXE results show that the distribution of dopant Calcium is not uniform
and the ring-enrichment region indicates that the capsule is already broken.The RBS detects the thickness of each layer and the content ratios of Carbon
Oxide and Hydrogen as well as their distributions.And the STIM results show that the distribution of density is not homogeneous
neither the energy loss.Conclusions: Ion beam analytic techniques including PIXE
RBS and STIM based on nuclear microprobe system have their advantage in the measurement of ICF target.It is non-destructive
and can give the elemental content and their distribution of multi-element in the order of several micrometer.
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