title: Blind deconvolution for spatial distribution of Kα emission from ultraintense laser-plasma interaction.
abstract: The spatial distributions of the Kα emission from foil targets irradiated with ultra-intensity laser pulses have been studied using the x-ray coded imaging technique. Due to the effect of hard x-ray background contamination, noise as well as imperfection of imaging system, it is hard to determine the PSF analytically or measure it experimentally. Therefore, we propose a blind deconvolution method to restore both the spatial distributions of the Kα emission and the system's PSF from the coded images based on the maximum-likelihood scheme. Experimental restoration results from penumbral imaging and ring coded imaging demonstrated that both the structure integrity and the rich detail information can be well preserved.
authors.forename: Weihua
authors.initials: W
authors.lastname: He
authors.forename: Zongqing
authors.initials: Z
authors.lastname: Zhao
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Bo
authors.initials: B
authors.lastname: Zhang
authors.forename: Feng
authors.initials: F
authors.lastname: Qian
authors.forename: Zuhua
authors.initials: Z
authors.lastname: Yang
authors.forename: Min
authors.initials: M
authors.lastname: Shui
authors.forename: Feng
authors.initials: F
authors.lastname: Lu
authors.forename: Jian
authors.initials: J
authors.lastname: Teng
authors.forename: Leifeng
authors.initials: L
authors.lastname: Cao
authors.forename: Yuqiu
authors.initials: Y
authors.lastname: Gu