低温超导体小型力学实验设备的研制

基于超导线材的研究及应用需求,为进一步探索其物理机理及推进其工程应用,设计研制了一套用于超导材料在力-电-磁-热耦合作用下,其临界电流衰减规律的测试设备。该设备可实现在10~300K、0~600A、1000N、0~5T范围内的超导材料性能测试。     

振动不敏感球形光学参考腔研究

本文主要研究用于超稳激光研制的实验室内水平放置的球参考腔的振动敏感度问题.研究了支撑点高度和支撑面积对腔长变化的影响,并讨论了加速度大小的变化对腔长变化的影响.在支撑点完全固定的情况下,振动敏感度被降低到3.0×10-10/g以内.通过大量的数值模拟获得了球参考腔的最佳支撑位置.根据优化的结果提出了这种切割球参考腔放置平台的方案.考虑了加工误差、近水平放置和非对称支撑对参考腔振动敏感度的影响,定量地给出了这三种因素引起的腔长改变量,而且讨论了二阶效应对腔长变化的贡献.     

Neutron Star Motion in the Disk Galaxy

The neutron star motions are based on the undisturbed finitely thick galactic disk gravitational potential model. Two initial conditions, i.e. the locations and velocities, are considered. The Monte Carlo method is employed to separate rich diversities of the orbits of neutron stars into several sorts. The Poineare section has the potential to play an important role in the diagnosis of the neutron star motion. It has been observed that the increasing ratio of the motion range vertical to the galactic plane to that parallel to the galactic plane results in the irregularity of neutron star motion.