本文简单介绍用计算机程序控制的光谱范围在400～700nm的激光分光计.用此分光计测量了氪波长432nm,436nm和557nm的光学跃迁无多普勒效应的同位素位移,并用金(King)图检验实验数据.结果是十分满意的.从所测量的同位素位移值,推算出稳定氪的平均平方核电荷半径变化δ〈γ~2〉.

In the present paper authors give a brief account of a computer program controlled dye-laser spectrometer with spectral range from 400 nm to 700 nm. The Doppler-free isotope shifts in the optical transitions at 432 nm, 436 nm, and 557 nm have been measured by means of the spectrometer. The results tested by the King s diagram are found to be satisfactory. From the measured values of the, isotope shifts the changes in the nuclear mean square charge radii δ for stable Kr isotope are calculated.