中国科学院近代物理研究所承担的强流重离子加速器装置目前已进入了初步设计阶段。增强器作为该装置的主加速器, 可利用双向涂抹技术将238U35+束的粒子数累积至1.0×1011, 并将其从注入能量为17 MeV/u加速至高能量, 引出能量的范围为200-835 MeV/u。为了提供s量级的准连续束以开展辐照实验, 增强器中设计了慢引出系统, 该系统将采用三分之一共振与RF-knockout的引出方法。同步加速器中有两种不同种类的六极磁铁, 用于实现色品校正与共振驱动, 并在设计中考虑了两者能同时运行并互不影响。针对增强器中不同引出能量的238U35+束, 对其相应的稳定接受度模拟结果进行了比较, 并给出了在引出静电偏转板处的光学匹配参数, 这将为增强器中重离子束的慢引出及放射性次级束流分离器的入口光学设计提供重要的理论依据。

Eye-feature diagnosis is a time-honored method for studying many diseases in traditional Chinese medicine. There is a close relationship between eye-feature and viscera, and eye-feature is a reflection of visceral health status. Commercially used ophthalmology diagnosis instruments have disadvantages and cannot satisfy the requirements of eye-feature diagnosis. In this paper, we proposed a novel askiatic imaging method that removes the interference of an illumination source's reflection shadow and is free from image splicing. We developed a novel imaging system to implement this method, and some eye-feature characteristics to analyze visceral diseases were obtained.

This letter presents a label-free biomolecular imaging technique based on white-light interferometry and spectral detection. The method measures thickness changes caused by specific binding between biomolecules to detect the presence of certain analyte. A spectrum-shifting algorithm is developed to resolve the thickness information from the spectrum. The axial resolution of the experimental instrument can reach ～1 nm, thereby enabling detection of trace amounts (~1 ng/mm2) of proteins or DNA. This letter also presents two experiments to prove the feasibility of the method for detecting proteins and DNA without fluorescent labeling.