部分相干X射线相位成像研究

研究了基于同轴伽柏（Ｇａｂｏｒ）Ｘ射线全息方法的Ｘ射线相位成像。应用部分相干光的轴ＧａｂｏｒＸ射线全息理论，分析了射光的部分相干性对直接Ｘ射线相位成像的影响，指出相干性直接成像的影响不是很大，并研究了Ｘ射线相位全息。讨论了入射光的部分相干性、记录介质的有限分辨、物体与记录介质的准直程度和腹复原的位置等因素对成像质量的影响。证明了物体与记录介质的不准直是影响相位成像质量的最重要因素，给出了纵向记录长

Study of Partial Coherent X-Ray Phase Imaging

X ray phase imaging based on in line Gabor holography is stuided. Using the theory of partial coherent X ray in line Gabor holography, we analyses both direct and indirect(holographic) phase imaging. The coherence has little effect on direct phase imaging. For phase holography, the effects of coherence, resolution of recording materiel, restoring length, and recording position on imaging quality are discussed. The uncertainty of recording position is the most important reason degraded the imaging quality. A requirement is given to get high quality phase imaging.