Infrared spectra and optical constants of astronomical ices: III. Propane, propylene, and propyne

Infrared spectra and optical constants of astronomical ices: II. Ethane and ethylene

Infrared spectroscopic observations have established the presence of hydrocarbon ices on Pluto and other TNOs, but the abundances of such molecules cannot be deduced without accurate optical constants (n, k) and reference spectra. In this paper we present our recent measurements of nearand mid-infrared optical constants for ethane (C2H6) and ethylene (C2H4) in multiple ice phases and at multipl...

Infrared spectra and optical constants of astronomical ices: I. Amorphous and crystalline acetylene

Infrared Spectra and Optical Constants of Elusive Amorphous Methane

New and accurate laboratory results are reported for amorphous methane (CH ) 4 ice near 10 K for the study of the interstellar medium (ISM) and the outer Solar System. Nearand mid-infrared (IR) data, including spectra, band strengths, absorption coefficients, and optical constants, are presented for the first time for this seldom-studied amorphous solid. The apparent IR band strength near 1300 ...

Mid-infrared extinction spectra and optical constants of supercooled water droplets.

Complex refractive indices of supercooled liquid water have been retrieved at 269, 258, 252, and 238 K in the 4500-1100 cm(-1) wavenumber regime from series of infrared extinction spectra of micron-sized water droplets. The spectra collection was recorded during expansion experiments in the large coolable aerosol chamber AIDA of Forschungszentrum Karlsruhe. A Mie inversion technique was applied...

A quantitative test of infrared optical constants

A quantitative test of infrared optical constants for supercooled sulphuric and nitric acid droplet aerosols R. Wagner, A. Mangold, O. Möhler, H. Saathoff, M. Schnaiter, and U. Schurath Forschungszentrum Karlsruhe, Institute of Meteorology and Climate Research, Karlsruhe, Germany Forschungszentrum Jülich, Institute of Chemistry and Dynamics of the Geosphere I (ICG-I): Stratosphere, Jülich, Germ...