Strength-Half-Width Products of Self-Broadened Lines in the 6.3 Micron Band of Water Vapor

摘要

Absorption spectra of ten self-broadened lines in the 6.3 micron band of water vapor were obtained using a 100 foot long absorption cell with water vapor concentrations between 0.0092 pr. cm and 0.042 pr. cm. With an optical path of 19800 cm, all of the lines were in the square root region of the curve of growth. A procedure for adjusting the 100% transmission line was devised which eliminated that part of the absorption due to wings of distant lines which was constant over the integration interval. The strength-half-width product for each of the ten lines was then obtained from the resultant curve of growth. The results are compared with other values in the literature; the limitations and implications of the adjusting procedure are discussed.