Image Details
Caption: Figure 9.
The imaginary part of the optical constants for the H2O ν2 + νR band as a function of wavenumber. The band shows a slight increase in strength and a shift to higher wavenumbers as the temperature decreases. Naturally occurring HDO is visible near 2420 cm−1. It shows the same increase in strength and shift to lower wavenumbers with decreasing temperature as seen in the HDO sample in Figure 6.
© 2026. The Author(s). Published by the American Astronomical Society.