基于三稳频激光波长的相移干涉测量法修正空气折射率湿度参数

针对公式法测量空气折射率受到Cd光源频率稳定性低和应用温度区间小的影响,其湿度修正误差不适应当前光学精密测量的实际需求的问题,提出了基于相移干涉光路的折射率测量光路.该光路由一个相移干涉光路和一个辅助角度测量干涉光路组成,并采用3个高精度稳频波长作为光源（532,633,780 nm）.在14.6~24.0℃温度区间内进行实验,获得了对湿度的修正系数并得到修正公式.将其用于实验比对,表明所得公式的测量精度优于Boensch公式.      

主次双波长计算光度法测定铁的研究--phen-Fe(Ⅱ)显色体系测定水中铁

本文利用主次双波长光度法，通过Fe(Ⅱ）－phen显色体系，依据显色体系吸光度A与照射波长λ及物质浓度x间的关系，提出了测定铁的主次波长新光度法，精密度提高，检测限降低。     

Energies, fine structures and transition wavelengths of the core-excited states in Be * ions

The fine structures of doubly excited resonances of lithium-like beryllium are calculated using the saddle-point and saddle-point complex-rotation methods. A restricted variational method is used to obtain a more accurate value for the nonrelativistic energy. Relativistic and mass polarization corrections to the resonance energy are included. Transition wavelengths are also calculated and compared with other theories and experimental results