CAJ | 학술논문

研制了用于ICF实验激光焦斑监测的X射线闪烁屏针孔相机，通过使用CsI闪烁屏，能够有效的减小焦斑成像中硬X射线份额，图像的信噪比有了很大提高。使用蒙卡方法对CsI的能量沉积进行了模拟，计算出适合于针孔相机的闪烁屏厚度。由于针状CsI闪烁屏的分辨力优于一般闪烁体，制造了针状CsI闪烁屏作为针孔相机的成像元件。在X射线管上做了CsI闪烁屏的成像实验，实验表明闪烁屏具有较好的分辨力，最小分辨达到15 lp／mm，整个X射线闪烁屏针孔相机的分辨力好于24μm，和普通针孔相机的分辨力基本相当。
연제료용우ICF실험격광초반감측적X사선섬삭병침공상궤，통과사용CsI섬삭병，능구유효적감소초반성상중경X사선빈액，도상적신조비유료흔대제고。사용몽잡방법대CsI적능량침적진행료모의，계산출괄합우침공상궤적섬삭병후도。유우침상CsI섬삭병적분변력우우일반섬삭체，제조료침상CsI섬삭병작위침공상궤적성상원건。재X사선관상주료CsI섬삭병적성상실험，실험표명섬삭병구유교호적분변력，최소분변체도15 lp／mm，정개X사선섬삭병침공상궤적분변력호우24μm，화보통침공상궤적분변력기본상당。
An X-ray scintillation layer pinhole camera was developed for diagnosing the laser focal spot in ICF experiment .As the scintillation layer reduces the fraction of hard X -ray in laser focal spot imaging , and the signal-to-noise ratio of the image can be highly promoted .The X-ray energy deposit in CsI scintillator was simulated with Monte Carlo method , and the proper thickness of the CsI scintillation layer for pinhole camera was determined .Needle scintillation layer has better spatial solution than usual scintillator , so a CsI needle scintillation layer was made as the imaging device of pinhole camera .The imaging experiment showed that the spatial resolution of CsI layer was 15 lp/mm, and the spatial resolution of X -ray scintillation layer pinhole camera was better than 24 μm, which was nearly equal to the spatial resolution of usual pinhole camera .