Absorption of potassium vapor at high temperatures, and Satellites accompanying the members of the Principal series

Abstract

Absorption spectrum of potassium vapor at high temperatures.- Further experiments have confirmed the existence of the lines λλ5340, 5300, 5205, 5100, 4970, and 4831 previously noticed. The line 4831 was well defined and in intensity comes next to 4641 and 4642; it probably is the combination line (1P-8D). The line 4120 was obtained distinctly reversed. The absorption spectrum showed among other lines some 15 satellites accompanying P₃ to P₈, which are not found in the emission spectrum. They increase in number and in width as vapor density is increased, finally coalescing to form a wide band.