A new reconstruction method based on classical molecular dynamics of neutron penumbral imaging in ICF

Dongjian, Liu; Zhou, Lian; Tang, C. J.; Zhao, Ziqi; Hou, Qing; An, Z.

doi:10.1016/j.nima.2007.06.005

Cited by 11 publications

(1 citation statement)

References 15 publications

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“…Compared with pinhole, penumbral aperture has higher radiation collection efficiency. Penumbral imaging [3][4][5] has been successfully used in micrometre size ICF target plasmas diagnosis. However, the penumbral aperture size must be larger than the radiation source.…”

Section: Introductionmentioning

confidence: 99%

Linear Reconstruction Methods for Large Thick Aperture Imaging

et al. 2018

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Large thick aperture imaging method is proposed to measure the radiation intensity distribution of radiation source whose size is several centimetres. The new method contains two steps which are coded imaging and image reconstruction. Geant4 is used to simulate the coded imaging process. Wiener filter, Lucy-Richardson, Regularized filter, blind deconvolution and CT reconstruction method are realized using Matlab software. Wiener filter and Regularized filter produce artifacts. CT reconstruction method can’t reveal the right size of 60Co-γ source because of the overlapping of knife edge images. Both L-R and blind deconvolution are effective. If the aperture is moved 0 mm, 2 mm, 4 mm, 6 mm along x-axis, the reconstruction result using L-R method has a larger correlation coefficient with source image. However, L-R method gets bad result if the aperture rotates more than 1.4°. Under this condition, blind deconvolution is the better choice.

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Section: Introductionmentioning

confidence: 99%