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The Cosmic Ice Laboratory - IR Spectra

The Cosmic Ice Laboratory - IR Spectra


PLEASE NOTE: If you find these spectra helpful in your research, please acknowledge any use by reference to "Hudson et al." and this NASA web site.

  • Acetylene-containing ices - Files for figures in the acetylene (C2H2) paper of Knez, Moore, Ferrante, and Hudson are here in the Origin software's format. See The Astrophysical Journal, 2012, 748(2) for the complete paper.
  • Ammonia-containing ices - Files are here for figures from "Ammonia-Water Ice Laboratory Studies Relevant to Outer Solar System Surfaces" by Moore, M. H., Ferrante, R. F., Hudson, R. L., and Stone, J. N. (2007) Icarus, 190, 260-273.

  • Here are the two types of spectra in the tables below:
    1. Mid-IR Spectra of Molecules Diluted in H2O at 15 - 20 K
    2. Far-IR Spectra of H2O Ice

    IR Spectra of Three H2O + (sulfur compound) Ices

        The Excel file at this address has mid-IR spectra of three two-component ices, H2O + OCS, H2O + H2S, and H2O + SO2, each with a 10:1 number (molar) ratio, with H2O as the more-abundant component. The temperature for each sample was 10 K. See the paper of Yarnall & Hudson (The Astrophysical Journal Letters, 2022) for more details.
    IR Spectra of Eight Amorphous Ices

        The Excel file at this address has spectra of these eight compounds: ethane, 2-propanol, propene, acetic acid, methyl formate, methanol, ethanol, 1-propanol, formaldehyde, ammonia, HNCO, and HCN. These are the eight compounds of Table 1 in the paper of Hudson & Gerakines, MNRAS, 2019 on irradiated N2 + acetone ices. Each spectrum is of an amorphous ice. See that paper for further details.
    IR Reference Spectra of Pure and Mixed ices

    Mid-infrared reference spectra recorded by P. Gerakines in the 1990s during his graduate studies are available at the Internet Archive. These include IR spectra near 10 K for H2O, NH3, CH4, CO, CO2, H2CO, CH3OH, N2, and O2, as well as various mixtures of these compounds. Spectra after far-UV photolysis of many of these ices also are available.
    Mid-IR (4000-400 cm-1) Spectra of Molecules Diluted in H2O at 15 - 20 K

    Ice Composition Description Available Formats
    Carbon Oxides
    H2O + CO (20:1) Water + Carbon Monoxide (20:1) at T = 16 K ASCII [74 kb]
    SPC [20 kb]
    PDF [25 kb]
    H2O + CO2 (10:1) Water + Carbon Dioxide (10:1) at T = 17 K ASCII [59 kb]
    SPC [16 kb]
    PDF [23 kb]
    Alkanes
    H2O + CH4 (20:1) Water + Methane (20:1) at T = 15 K ASCII [56 kb]
    SPC [16 kb]
    PDF [22 kb]
    H2O + C2H6 (20:1) Water + Ethane (20:1) at T = 15 K ASCII [56 kb]
    SPC [16 kb]
    PDF [22 kb]
    H2O + C3H8 (22:1) Water + Propane (22:1) at T = 16 K ASCII [58 kb]
    SPC [16 kb]
    PDF [20 kb]
    H2O + C4H10 (20:1) Water + Butane (20:1) at T = 16 K ASCII [59 kb]
    SPC [15 kb]
    PDF [22 kb]
    Alkenes
    H2O + C2H4 (20:1) Water + Ethylene (20:1) at T = 15 K ASCII [57 kb]
    SPC [15 kb]
    PDF [22 kb]
    H2O + C3H6 (17:1) Water + Propylene (17:1) at T = 17 K ASCII [58 kb]
    SPC [16 kb]
    PDF [22 kb]
    Alkynes
    H2O + C2H2 (15:1) Water + Acetylene (15:1) at T = 15 K ASCII [58 kb]
    SPC [16 kb]
    PDF [20 kb]
    H2O + C3H4 (approx. 20:1) Water + Methylacetylene (approx. 20:1) at T = 16 K ASCII [59 kb]
    SPC [16 kb]
    PDF [21 kb]
    Dienes
    H2O + C3H4 (13:1) Water + Allene (13:1) at T = 17 K ASCII [60 kb]
    SPC [16 kb]
    PDF [22 kb]
    H2O + C4H6 (20:1) Water + Butadiene (20:1) ASCII [56 kb]
    SPC [16 kb]
    PDF [22 kb]
    Alcohols
    H2O + CH3OH (5:1) Water + Methanol (5:1) ASCII [224 kb]
    SPC [59 kb]
    PDF [33 kb]
    H2O + C2H5OH (20:1) Water + Ethanol (20:1) at T = 15 K ASCII [56 kb]
    SPC [16 kb]
    PDF [23 kb]
    H2O + C2H4(OH)2 (5:1) Water + Ethylene Glycol (5:1) at T = 18 K. H2O features are identified with asterisks ("*") in the graphs. ASCII [55 kb]
    EPS [53 kb]
    Aldehydes
    H2O + H2CO (8:1) Water + Formaldehyde (8:1) at T = 15 K ASCII [55 kb]
    SPC [16 kb]
    PDF [24 kb]
    H2O + CH3COH (20:1) Water + Acetaldehyde (20:1) at T = 16 K ASCII [57 kb]
    SPC [16 kb]
    PDF [24 kb]
    Ketones
    H2O + (CH3)2CO (20:1) Water + Acetone (20:1) at T = 16 K ASCII [58 kb]
    SPC [16 kb]
    PDF [23 kb]
    H2O + (CH3)(C2H5)CO (approx. 40:1) Water + Methylethyl Ketone (MEK) (approx. 40:1) ASCII [57 kb]
    SPC [16 kb]
    PDF [23 kb]
    Acids
    H2O + HCOOH (9:1) Water + Formic Acid (9:1) at T = 17 K ASCII [58 kb]
    SPC [16 kb]
    PDF [24 kb]
    H2O + CH3COOH (10:1) Water + Acetic Acid (10:1) at T = 16 K ASCII [58 kb]
    SPC [16 kb]
    PDF [22 kb]
    Esters
    H2O + HCOOCH3 (20:1) Water + Methylformate (20:1) at T = 16 K ASCII [73 kb]
    SPC [20 kb]
    PDF [24 kb]
    Ethers
    H2O + (CH3)2O (20:1) Water + Dimethylether (20:1) ASCII [75 kb]
    SPC [20 kb]
    PDF [33 kb]
    H2O + c-C2H4O (approx. 20:1) Water + Ethylene Oxide (approx. 20:1) ASCII [75 kb]
    SPC [20 kb]
    PDF [25 kb]
    Amines
    H2O + NH3 Water + Ammonia See table below
    H2O + CH3NH2 Water + Methylamine (unknown dilution) at T = 16 K ASCII [56 kb]
    SPC [16 kb]
    PDF [24 kb]
    Assorted
    H2O + N2O (10:1) Water + Nitrous Oxide (dinitrogen oxide) (10:1) at T = 18 K ASCII [57 kb]
    SPC [16 kb]
    PDF [21 kb]
    H2O + HCN (3:1) Water + Hydrogen Cyanide (3:1) ASCII [71 kb]
    SPC [20 kb]
    PDF [25 kb]
    H2O + H2O2 (3%) Water + Hydrogen Peroxide (3%) at T = 19 K ASCII [55 kb]
    SPC [16 kb]
    PDF [21 kb]
    H2O + OCS (20:1) Water + Carbonyl Sulfide (20:1) at T = 16 K ASCII [59 kb]
    SPC [16 kb]
    PDF [23 kb]


    Far-Infrared Spectra of H2O Ice (read a detailed description here)

    Ice History Description Available Formats
    H2O deposited at 14 K
    and subsequently warmed    		 deposit at 14 K ASCII [28 kb]
    warmed to 40 K ASCII [25 kb]
    warmed to 80 K ASCII [26 kb]
    warmed to 100 K ASCII [25 kb]
    warmed to 120 K ASCII [24 kb]
    warmed to 140 K ASCII [24 kb]
    warmed to 160 K ASCII [24 kb]
    H2O deposited at 160 K
    and subsequently cooled    		 deposit at 160 K ASCII [24 kb]
    cooled to 140 K ASCII [24 kb]
    cooled to 120 K ASCII [24 kb]
    cooled to 100 K ASCII [24 kb]
    cooled to 80 K ASCII [24 kb]
    cooled to 40 K ASCII [26 kb]
    cooled to 14 K ASCII [28 kb]
    H2O deposited at various temperatures
    deposit at 40 K ASCII [26 kb]
    deposit at 80 K ASCII [24 kb]
    deposit at 100 K ASCII [24 kb]
    deposit at 120 K ASCII [24 kb]
    deposit at 140 K ASCII [24 kb]




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    • Last Updated: 25-Jul-2022