Scanning transmission ion microscopy computed tomography (STIM-CT) for inertial confinement fusion (ICF) targets

作者：Li, Y. Q.; Habchi, C.; Liu, X.; Liu, Y. Y.; Zheng, Y.; Li, X. Y.; Shen, H.^*

来源：Fusion Engineering and Design, 2013, 88(4): 188-194.

DOI：10.1016/j.fusengdes.2013.01.080

• ICF target
• STIM-CT
• Three-dimensional

ICF target quality control in the laser fusion Program is vital to ensure that the energy deposition from the lasers results in uniform compression and minimization of Rayleigh-Taylor instabilities, which requires surface finishes on the order of submicron-scale. During target fabrication process the surface finish and the dimensions of the hohlraum need be well controlled. Density variations and nonspherical or nonconcentric shells might be produced. Scanning transmission ion microscopy computed tomography (STIM-CT) is able to reconstruct the three-dimensional quantitative structure of ICF targets a few tens of micrometers in,size. Compared to other types of probe techniques, the main advantage of STIM-CT is that quantitative information about mass density and sphericity can be obtained directly and non-destructively, utilizing specific reconstruction codes. We present a case of ICF target (composed of polyvinyl alcohol) characterization by STIM-CT in order to demonstrate the STIM-CT potential impact in assessing target fabrication processes.

• 出版日期2013-5
• 单位中国工程物理研究院激光聚变研究中心; 中国工程物理研究院; 复旦大学