垂直对称式平面光栅摄谱仪色散率公式的实验矫正及其在计算机寻找谱线时的应用

THE CORRECTION OF THE FORMULA FOR LINEAR DISPERSIVE POWER AND ITS USE IN COMPUTER'S SEEKING SPECTRA'S PLACES

本文对垂直对称式平面光栅摄谱仪的线色散率公式(dL/dλ=nf/αcosβ),通过实验矫正应为dL/dλ=2nf/α(cosβ+cosβ^(1/2))。矫正后的线色散率公式可直接用于汇编计算机自动寻找谱线位置的程序。而且程序简单,操作简便(仅输入两个波长值),欲找的谱线位置准确。

Based on a series of experiments, the formula dL/dλ=nf/αcosβ (for the verticalsymmetrical plane grating spectrograph) has been corrcted to dL/dλ=2nf/α(cosβ+cosβ^(1/2)) in this paper. The corrected formula can directly be used to work out the computer program of automatic seeking spectra's places. It will make the program simpler, the operation easier—only two wavelength values are inputted, and the places of the spectra seeking by computer are accurate.