The Absolute Oscillator Strengths of the PB I Lines Lambda 2833,Lambda 2873,Lambda 3639,Lambda 3683,and Lambda 4057by the Method of Total Absorption.

摘要

The oscillator strengths of PB I for Lambda 2833,Lambda 2873,Lambda 3639,Lambda 4057were measured by the method of total absorption. Radiation was passed through lead vapor of a known temperature. A 6-meter spectrograph was used to photograph the absorption lines. This data along with lead vapor pressure data yielded the f-values. The f-values found agreed well with those found by other laboratories. Due to systematic errors,there was a 10% uncertainty in the average f-values of each line. The standard deviation of the 16samples of each line was less than 10%. (Author)