Knowledge Bank

In an a.c. glow discharge through hydrogen and potassium vapor, the vibration-rotation spectra of potassium hydride has been observed throughout the 800-1100 cm region. The absorption lines are quite strong, suggesting KH densities of $\sim 1012-13$ cm. So far we have systematically recorded the fundamental and first hot bands of the K-39 and K-41 isotopes, and we will report their analyses.