The Cosmic Ice Laboratory
Present and Recent Positions
Lead Scientist, Cosmic Ice Laboratory, NASA
Goddard Space Flight Center
2009 - present
Lecturer, Department of Astronomy, University of Maryland
2010 - 2018
Associate Chief, Astrochemistry Laboratory, NASA Goddard Space Flight Center
2011 - 2018
Acting Chief, Planetary Systems Laboratory, NASA
Goddard Space Flight Center
2010 - 2011
Faculty Member, Eckerd College, St. Petersburg, Florida
1978 - 2008, tenured in 1984, Professor of Chemistry after 1991
Education
1985 - 1986, Post-doctoral research, University College London
1978 - Ph.D., Physical Chemistry, University of Tennessee
1974 - A.B., Chemistry and Mathematics, Pfeiffer University (Misenheimer, NC)
Research Areas
Chemistry and physics of cosmic
ices, especially those of the interstellar medium, comets, TNOs, the Pluto-Charon system, Jupiter's and Saturn's satellites, and Mars
Low-temperature astrophysics/astrochemistry of interstellar regions
Radiation chemistry, photochemistry, and thermal chemistry applied to astronomical problems
Molecular spectroscopy applied to molecular structure, bonding, and reactions of astronomical solids
Astrobiology - planetary systems, prebiotic chemistry
Teaching Areas
Courses in physical chemistry, astrobiology, and astronomy
Courses in introductory chemistry and in the history and methods of science
Courses in Eckerd College's Honors Program (served as program's first director)
John M. Bevan Teaching Excellence and Campus Leadership Award (Eckerd College, 2008)
Lloyd W. Chapin Award for Excellence in Scholarship (Eckerd College, 2005)
Professional Societies
American Astronomical Society: Laboratory Astrophysics and Planetary Sciences Divisions
American Chemical Society: Chemical Education, Physical Chemistry, and History of Chemistry Divisions
Chair, American Chemical Society's Astrochemistry Subdivision (2016 - 2017)
International Astronomical Union
Royal Society of Chemistry (U.K.): Astrochemistry, Education, History of Chemistry, and Faraday Divisions
American Geophysical Union: Planetary Sciences Section
Coblentz Society
Sigma Xi (Life Member)
Some Recent Professional Activities
Founding member of the astrobiology team at NASA's Goddard Space Flight Center
Member of Goddard's DREAM2 team - funded by NASA's SSERVI program
Manuscript reviewer for The Astrophysical Journal, Astronomy & Astrophysics, Monthly Notices of the Royal Astronomical Society, Science,
Nature, Icarus, Journal of Geophysical Research - Planets, Planetary and Space Science, Astrobiology, Origins of Life and
Evolution of Biospheres, Journal of the American Chemical Society, Chemical Physics, Chemical Physics Letters, Molecular Physics, Journal of Physical Chemistry,
Physical Chemistry Chemical Physics, Journal of Chemical Education, and Spectrochemica Acta
Proposal reviewer for NASA programs in Astrophysics Research and Analysis, Emerging Worlds, Planetary Atmospheres, Outer Planets Research, Cassini Data Analysis,
Planetary Geology and Geophysics, and Exobiology
Presentations at meetings of the American Astronomical Society, American Geophysical Union, NASA Astrobiology
Institute, and the American Chemical Society
Presentations at meetings of the Congress of Space Researchers (COSPAR)
Presentations at "Asteroids, Comets, and Meteors" meetings
Presentations at workshops on Kuiper-Belt objects, outer planets, the Pluto-Charon system, space weathering, solid-state astrochemistry, and solar-system ices
Grant Support
Research - Continuous grant support from NASA for astrochemical and planetary science
research from 1991 to the present; most recent grant support from NASA's Astrophysics Research and Analysis, Emerging Worlds,
Exobiology, Planetary Atmospheres, Outer Planets Research, Cassini Data Analysis, and Planetary
Geology and Geophysics programs
Teaching - Support from the NSF Instrumentation Program
and the Howard Hughes Medical Institute; numerous internal
grants from Eckerd College
Selected Refereed Publications from the Cosmic Ice Laboratory
Hudson, R. L. and Gerakines, P. A. (2023). Influences on IR Spectra of Benzene Ices for Titan, Comets,
and Beyond: Annealings, Artifacts, and Isosbestic Points.
The Planetary Science Journal, accepted - in press.
Hudson, R. L., Gerakines, P. A., Yarnall, Y. Y., (2023). Infrared Spectra and Optical Constants
of Astronomical Ices: V. Cyclopropane and Ethylene Oxide
Icarus,
396, 115499 (11 pages).
Qasim, D., McLain, H., Aponte, J., Glavin, D. P., Dworkin, J. P., and Materese, C. K. (2023).
Meteorite Parent Bodies Aqueous Alteration Simulations of Interstellar Residue Analogs.
ACS Earth & Space Science,
7, 156.
Materese, C. K. (2022). Radiation Induced D-to-H Exchange in Ices Containing Ethane or Benzene:
Reactions and Rate Constants.
The Astrophysical Journal,
941, 1 (8 pages).
Yarnall, Y. Y. and Hudson, R. L. (2022). Infrared Intensities of Methyl Acetate,
an Interstellar Compound - Comparisons of Three Organic Esters.
Spectrochimica
Acta,
283, 121738 (8 pages).
Hudson, R. L. (2022). Infrared Spectra of Benzene Ices: Reexamination and Comparison
of Two Recent Papers and the Literature.
Icarus,
384, 115091 (3 pages).
Hudson, R. L., Yarnall, Y. Y., and Gerakines, P. A. (2022). Benzene Vapor Pressures at
Titan Temperatures: First Microbalance Results.
The Planetary Science Journal,
3, 1 (6 pages).
Hudson, R. L. and Yarnall, Y. Y. (2022). Infrared Spectra and Intensities of Amorphous and
Crystalline Allene.
ACS Earth & Space Science,
6, 1163.
Yarnall, Y. Y. and Hudson, R. L. (2022). A New Method for Measuring IR Band Strengths
in H2O-Ices: First Results for OCS, H2S, and SO2.
The Astrophysical Journal Letters,
91, L4.
Qasim, D., Hudson, R. L., and Materese, C. K. (2022). Measured Radiation-Induced D/H Exchange
Rate Constants in Aliphatics Embedded in Water Ice.
The Astrophysical Journal,
929, 176.
Hudson, R. L., Yarnall, Y. Y., and Gerakines, P. A. (2022). Infrared Spectral Intensities of
Amine Ices, Precursors to Amino Acids.
Astrobiology,
22, 452.
Gerakines, P. A., Qasim, D., Frail, S., and Hudson, R. L. (2022). Radiolytic Destruction of
Uracil in Interstellar and Solar System Ices.
Astrobiology,
22, 233.
Hudson, R. L. and Yarnall, Y. Y. (2022). Infrared Spectra and Optical Constants of Astronomical
Ices: IV. Benzene and Pyridine.
Icarus,
377, 1 (9 pages).
Hudson, R. L., Gerakines, P. A., and Yarnall, Y. Y. (2022). Ammonia Ices Revisited: New IR Intensities
and Optical Constants for Solid NH
3.
The Astrophysical Journal,
925, 1 (8 pages).
Yarnall, Y. Y. and Hudson, R. L. (2022). Crystalline Ices - Densities and Comparisons for Planetary
and Interstellar Applications.
Icarus,
373, 1 (4 pages).
Gerakines, P. A., Yarnall Y. Y., and Hudson, R. L. (2022). Direct Measurements of Infrared
Intensities of HCN and H
2O + HCN Ices for Laboratory and Observational Astrochemistry.
Monthly Notices of the Royal Astronomical Society,
509, 3515-3522.
McLain, J. L., Loeffler, M. J., Farrell, W. M., Honniball, C. I., Keller, J. W., and
Hudson, R. L. (2021). Hydroxylation of Apollo 17 Soil Sample 78421 by Solar Wind Protons.
J. Geophys. Res., 1 (10 pages).
Hudson, R. L., Yarnall, Y. Y., Gerakines, P. A., and Coones, R. T. (2021). Infrared Spectra and
Optical Constants of Astronomical Ices: III. Propane, Propylene, and Propyne.
Icarus,
354, 114033.
Materese, C. K., Gerakines, P. A., and Hudson, R. L. (2021). Laboratory Studies of Astronomical
Ices - Reaction Chemistry and Spectroscopy.
Accounts of Chemical Research,
54, 280-290.
Gerakines, P. A. and Hudson, R. L. (2020). A Modified Algorithm and Open-Source Computational
Package for the Determination of Infrared Optical Constants Relevant to Astrophysics.
The Astrophysical Journal,
901, 1 (10 pages).
Yarnall, Y. Y., Gerakines, P. A., and Hudson, R. L. (2020). Propanal, an Interstellar Aldehyde - First
Infrared Band Strengths and Other Properties of the Amorphous and Crystalline Forms.
Monthly
Notices of the Royal Astronomical Society,
494 4606-4615.
Materese, C. K., Gerakines, P. A., and Hudson, R. L. (2020). The Radiation Stability of Thymine
in Solid H
2O.
Astrobiology,
20, 1 (8 pages).
Hudson, R. L., Yarnall, Y. Y., and Coleman, F. C. (2020). Infrared Band Strengths and Other Properties
of Amorphous and Crystalline Dimethyl Ether.
Spectrochimica Acta,
233, 1 (5 pages).
Hudson, R. L. and Ferrante, R. F. (2020). Mid-Infrared Spectra of Dipropargyl Ether Ices Revisited.
Spectrochimica Acta,
233, 1 (5 pages).
Hudson, R. L., Loeffler, M. J., Ferrante, R. F., Gerakines, P. A., and Coleman, F. M. (2020).
Testing Densities and Refractive Indices of Extraterrestrial Ice Components Using Molecular
Structures - Organic Compounds and Molar Refractions.
The Astrophysical Journal ,
891, 1 (10 pages).
Hudson, R. L. and Ferrante, R. F. (2020). Quantifying Acetaldehyde in Astronomical Ices and
Laboratory Analogues: IR Spectra, Intensities,
13C Shifts, and Radiation Chemistry.
Monthly Notices of the Royal Astronomical Society,
492, 283-293.
Hudson, R. L. (2020). Preparation, Identification, and Low-Temperature Infrared Spectra
of Two Elusive Crystalline Nitrile Ices.
Icarus,
338, 113548 (9 pages).
Hudson, R. L. and Coleman, F. M. (2019). Solid-State Isomerization and Infrared Band Strengths
of Two Conformational Isomers of Cyclopropanecarboxaldehyde, A Candidate Interstellar Molecule.
ACS Earth & Space Chemistry,
3, 1182-1188.
Hudson, R. L. and Coleman, F. M. (2019). Infrared Intensities and Molar Refraction of Amorphous
Dimethyl Carbonate - Comparisons to Four Interstellar Molecules.
Physical Chemistry Chemical
Physics,
211, 11284-11289.
Hudson, R. L. and Gerakines, P. A. (2019). Molecular Identifications in Experiments with
Astronomical Ice Analogs: New Data, Old Strategies, and the N
2 + Acetone System.
Monthly Notices of the Royal Astronomical Society,
485, 861-871.
Hudson, R. L. and Gerakines, P. A. (2019). Propynal, an Interstellar Molecule with an Exceptionally
Strong C≡C Infrared Band - Laboratory Infrared Data and Applications.
Monthly Notices
of the Royal Astronomical Society,
482, 4009-4017.
Hudson, R. L. and Mullikin, E. F. (2019). Infrared Band Strengths for Amorphous and Crystalline
Methyl Propionate, a Candidate Interstellar Molecule.
Spectrochimica Acta,
207, 216-221.
PDF
Hudson, R. L. (2018). N
2 Chemistry in Interstellar and Planetary Ices: Radiation-Driven
Oxidation.
The Astrophysical Journal,
867, 1-11.
PDF
Hudson, R. L. and Gerakines, P. A. (2018). Infrared Spectra and Interstellar Sulfur - New
Laboratory Results for H
2S and Four Malodorous Thiol Ices.
The Astrophysical
Journal,
867, 2-8.
PDF
Hudson, R. L. and Moore, M. H. (2018). Interstellar Ices and Radiation-Induced Oxidations of
Alcohols.
The Astrophysical Journal,
857, 1-8.
PDF
Hudson, R. L. (2018). Radiation Chemistry of Solid Acetone in the Interstellar Medium - A New
Dimension to an Old Problem.
Physical Chemistry Chemical Physics,
20, 5389-5398.
PDF
Hudson, R. L., Gerakines, P. A., and Ferrante, R. F. (2018). IR Spectra and Properties of Solid
Acetone, an Interstellar and Cometary Molecule.
Spectrochimica Acta,
193, 33-39.
PDF
Loeffler, M. J., and Hudson, R. L. (2018). Coloring Jupiter's Clouds: Radiolysis of Ammonium
Hydrosulfide (NH
4SH).
Icarus,
216.
PDF
Sella, A. and Hudson, R. L., (May 2017). Houskeeper's Seal.
Chemistry World , 70.
- Authorship correction on page 4 of the June 2017 issue.
PDF
Hudson, R. L. (2017). An IR Investigation of Solid Amorphous Ethanol - Spectra, Properties,
and Phase Changes.
Spectrochimica Acta,
187, 82-86.
PDF
Hudson, R. L., Loeffler, M. J., and Yocum, K. M. (2017). Laboratory Investigations into the Spectra
and Origin of Propylene Oxide, a Chiral Interstellar Molecule.
The Astrophysical Journal,
835, 225.
PDF
Hudson, R. L., Loeffler, M. J., and Gerakines, P. A. (2017). Infrared Spectra and Band Strengths of
Amorphous and Crystalline N
2O.
Journal of Chemical Physics,
146, 0243304.
PDF
Hudson, R. L. (2016). Infrared Spectra and Band Strengths of CH
3SH, an Interstellar
Molecule.
Physical Chemistry Chemical Physics ,
18, 25756-25763.
PDF
Loeffler, M. J., and Hudson, R. L. (2016). What is Eating Ozone? Thermal Reactions between SO
2
and O
3: Implications for Icy Environments.
The Astrophysical Journal,
833, L9.
Loeffler, M. J., Moore, M. H., and Gerakines, P. A. (2016). The Effects of Experimental Conditions
on the Refractive Index and Density of Low-Temperature Ices: Solid Carbon Dioxide,
The Astrophysical
Journal,
827, 98.
Loeffler, M. J., Hudson, R. L., Chanover, N. J., and Simon, A. A. (2016). The Spectrum of Jupiter's
Great Red Spot: The Case for Ammonium Hydrosulfide (NH4SH),
Icarus,
271, 265-268.
Loeffler, M. J., Hudson, R. L., Chanover, N. J., and Simon, A. A. (2015). Giant-planet Chemistry:
Ammonium Hydrosulfide (NH
4SH), its IR Spectra and Thermal and Radiolytic Stabilities.
Icarus,
258, 181-191.
Gerakines, P. A. and Hudson, R. L. (2015). First Infrared Band Strengths for Amorphous CO
2, an
Overlooked Component of Interstellar Ices.
The Astrophysical Journal Letters,
808, L40-L46.
PDF
Smith, K. E., Gerakines, P. A., and Callahan, M. P. (2015). Metabolic Precursors in Astrophysical
Ice Analogs.
Chemical Communications, DOI: 10.1039/c5cc03272e
Gerakines, P. A. and Hudson, R. L. (2015). The Infrared Spectra and Optical Constants of
Elusive Amorphous Methane.
The Astrophysical Journal Letters,
805, L20-L24.
PDF
Hudson, R. L., Gerakines, P. A., and Loeffler, M. (2015). Activation of Weak IR Fundamentals
of Two Species of Astrochemical Interest in the T
d Point Group - The Importance of Amorphous
Ices.
Physical Chemistry Chemical Physics, 17, 12545-12552.
PDF
Loeffler, M. and Hudson, R. L. (2015). Descent without Modification? The Thermal Chemistry of
H
2O
2 on Europa and Other Icy Worlds.
Astrobiology,
15, 453-461
PDF - preprint
Gerakines, P. A. and Hudson, R. L. (2015). The Radiation Stability of Glycine in Solid
CO
2 - In situ Laboratory Measurements with Applications to Mars.
Icarus,
252, 466-472.
PDF
Hudson, R. L., Gerakines, P. A., and Moore, M. H. (2014).
Infrared Spectra and Optical Constants of Astronomical Ices: II. Ethane and Ethylene.
Icarus,
243, 148-147.
PDF
Hudson, R. L., Ferrante, R. F., and Moore, M. H. (2014). Infrared Spectra and Optical Constants
of Astronomical Ices: I. Amorphous and Crystalline Acetylene.
Icarus,
228, 276-287.
PDF
Smith, K. E., Callahan, M. P., Gerakines, P. A., Dworkin, J. P., and House, C. H. (2014).
Investigation of Pyridine Carboxylic Acids in CM2 Carbonaceous Chondrites: Potential Precursor
Molecules for Ancient Coenzymes.
Geochimica et Cosmochimica Acta 136, 1-12.
PDF
Hudson, R. L. and Loeffler, M. J. (2013). Ketene Formation in Interstellar Ices: A Laboratory
Study.
The Astrophysical Journal,
773, 773-782.
PDF
Callahan, M. P., Gerakines, P. A., Martin, M. G., Peeters, Z., and Hudson, R. L. (2013).
Irradiated Benzene Ice Provides Clues to Meteoritic Organic Chemistry.
Icarus,
226,
1201-1209.
PDF
Loeffler, M. and Hudson, R. L. (2013). Low-temperature Thermal Reactions between SO
2
and H
2O
2 and their Relevance to the Jovian Icy Satellites.
Icarus,
224, 257-259.
PDF
Gerakines, P. A. and Hudson, R. L. (2013). Glycine's Radiolytic Destruction in Ices: First
in situ Laboratory Measurements for Mars.
Astrobiology,
13, 647-655.
PDF
Gerakines, P. A., Hudson, R. L., Moore, M. H., and Bell, J-L. (2012). In-situ Measurements of the
Radiation Stability of Amino Acids at 15 - 140 K.
Icarus,
220, 647-659.
PDF
Knez, C., Moore, M. H., Ferrante, R. F., and Hudson, R. L. (2012). Laboratory IR Studies and Astrophysical
Implications of C
2H
2-Containing Binary Ices.
The Astrophysical Journal,
748, 95.
PDF
Loeffler, M. and Hudson, R. L. (2012). Thermal Regeneration of Sulfuric Acid Hydrates after
Irradiation.
Icarus,
219, 561-566.
PDF
Loeffler, M., Hudson, R. L., Moore, M. H., and Carlson, R. W. (2011). Radiolysis of Sulfuric Acid, Sulfuric
Acid Monohydrate, and Sulfuric Acid Tetrahydrate and its Relevance to Europa.
Icarus,
215, 370-380.
PDF
Loeffler, M. and Hudson, R. L. (2010). Thermally-Induced Chemistry and the Jovian Icy Satellites:
A Laboratory Study of the Formation of Sulfur Oxyanions.
Geophysical Research Letters,
37, 19201.
PDF
Moore, M. H., Ferrante, R. F., Moore, W. J., and Hudson, R. L. (2010). Infrared Spectra and Optical
Constants of Nitrile Ices Relevant to Titan's Atmosphere.
The Astrophysical Journal - Supplement,
191, 96-112.
PDF
Cooper, P. D., Moore, M. H., and Hudson, R. L. (2010). O-atom Production in Water Ice: Implications for
O
2 Formation on Icy Satellites.
J. Geophys. Res.,
115, E10013.
Peeters, Z., Hudson, R.L., Moore, M.H., and Lewis, A. (2010). The Formation and Stability of Carbonic Acid
on Outer Solar System Bodies.
Icarus,
210, 480-487.
Hudson, R. L., Lewis, A. S., Moore, M. H., Dworkin, J. P., and Martin, M. P. (2009). Enigmatic Isovaline:
Investigating the Stability, Racemization, and Formation of a Non-Biological Meteoritic Amino Acid. Chapter
in
Bioastronomy 2007: Molecules, Microbes, and Extraterrestrial Life, Astronomical Society of the
Pacific.
PDF
Carlson, R. W., Calvin, W. M., Dalton, J. B., Hansen, G. B., Hudson, R. L., Johnson, R. E., McCord, T. B.,
and Moore, M. H. (2009). Europa's Surface Composition. Chapter in
Europa, University of Arizona Press.
Hudson, R. L., Moore, M. H., and Raines, L. L. (2009). Ethane Ices in the Outer Solar System: Spectroscopy
and Chemistry.
Icarus,
203, 677-680.
Hudson, R. L., Moore, M. H., Dworkin, J. P., Martin, M. P., and Pozun, Z. D. (2008). Amino Acids from
Ion-Irradiated Nitrile-Containing Ices.
Astrobiology,
8, 771-779.
Ferrante, R. F., Moore, M. H., Spiliotis, M. M., and Hudson, R. L. (2008). Formation of Interstellar OCS:
Radiation Chemistry and IR Spectra of Precursor Ices.
Astrophysical Journal,
684, 1210-1220.
PDF
Hudson, R. L., Palumbo, M. E, Strazzulla, G., Moore, M. H., Cooper, J., and Sturmer, S. J. (2008). Laboratory
Studies of the Chemistry of TNO Surface Materials. Chapter in
The Solar System Beyond Neptune,
University of Arizona Press.
PDF
Cooper, P. D., Moore, M. H., and Hudson, R. L. (2008). Radiation Chemistry of
H
2O + O
2 Ices.
Icarus,
194, 379-388.
PDF
Moore, M. H., Ferrante, R. F., Hudson, R. L., and Stone, J. N. (2007). Ammonia - Water Ice
Laboratory Studies Relevant to Outer Solar System Surfaces.
Icarus,
190,
260-273.
PDF
Moore, M. H., Hudson, R. L., and Carlson, R. W. (2007). The Radiolysis of SO
2 and
H
2S in Water Ice: Implications for the Icy Jovian Satellites.
Icarus,
189, 409-423.
PDF
Cooper, P. D., Moore, M. H., and Hudson, R. L. (2006). Infrared Detection of
HO
2 and HO
3 Radicals in Water Ice.
J. Phys. Chem. A,
110, 7985-7988.
PDF
Hudson, R. L. and Moore, M. H. (2006). Infrared Spectra and Radiation Stability of
H
2O
2 Ices Relevant to Europa.
Astrobiology,
6, 483-489.
PDF
Hudson, R. L. (2006). Astrochemistry Examples in the Classroom.
Journal of Chemical Education,
83, 1611-1615.
PDF
Moore, M. H. and Hudson, R. L. (2006). Production of Complex Molecules in Astrophysical
Ices.
Astrochemistry: Recent Successes and Current Challenges, Proceedings IAU Sym. 231,
Cambridge University Press, pp. 247-260.
PDF
Hudson, R. L., Khanna, R. K., and Moore, M. H. (2005). Laboratory Evidence for Solid-Phase
Protonation of HNCO in Interstellar Ices.
Astrophysical Journal - Supplement Series,
159, 277-281.
PDF
Hudson, R. L., Moore, M. H., and Cook, A. M. (2005). IR Characterization and Radiation Chemistry
of Glycolaldehyde and Ethylene Glycol Ices.
Advances in Space Research,
36, 184-189.
PDF
Ruiterkamp, R., Peeters, Z., Moore, M. H., Hudson, R. L., and Ehrenfreund, P. (2005). A Quantitative
Study of Proton Irradiation and UV Photolysis of Benzene in Interstellar Environments.
Astronomy
& Astrophysics ,
440, 391-402.
PDF
Colangeli, L., Brucato, J. R., Bar-Nun, A., Hudson, R. L., and Moore, M. H. (2005). Laboratory
Experiments on Cometary Materials. Chapter in
Comets II, University of Arizona Press, pp. 695-717.
PDF
Hudson, R. L. and Moore, M. H. (2004). Reactions of Nitriles in Ices Relevant to Titan, Comets,
and the Interstellar Medium: Formation of Cyanate Ion, Ketenimines, and Isonitriles.
Icarus,
172, 466-478.
PDF
Gerakines, P. A., Moore, M. H., and Hudson, R. L. (2004). Ultraviolet Photolysis and Proton Irradiation
of Astrophysical Ice Analogs Containing Hydrogen Cyanide.
Icarus,
170, 204-213.
PDF
Moore, M. H., Hudson, R. L., and Ferrante, R. F. (2003). Radiation Products in Processed Ices
Relevant to Edgeworth-Kuiper-Belt Objects.
Earth, Moon, and Planets,
92, 291-306.
PDF
Cottin, H., Moore, M. H., and Benilan, Y. (2003). Photodestruction of Relevant Interstellar
Molecules in Ice Mixtures.
Astrophysical Journal,
590, 874-881.
PDF
Hudson, R. L. and Moore, M. H. (2003). Solid-Phase Formation of Interstellar Vinyl Alcohol.
Astrophysical Journal,
586, L107-L110.
PDF
Moore, M. H. and Hudson, R. L. (2003). Infrared Study of Ion-Irradiated N
2-Dominated
Ices Relevant to Triton and Pluto: Formation of HCN and HNC.
Icarus,
161, 486-500.
PDF
Hudson, R. L. and Moore, M. H. (2002). The N
3 Radical as a Discriminator Between
Ion-Irradiated and UV-Photolyzed Astronomical Ices.
Astrophysical Journal,
568,
1095-1099.
PDF
Lowenthal, M. S., Khanna, R. K., and Moore, M. H. (2002). Infrared Spectrum of
Solid Isocyanic Acid (HNCO): Vibrational Assignments and Integrated
Band Intensities.
Spectrochimica Acta,
58, 73-78.
PDF
Gerakines, P. A. and Moore, M. H. (2001). Carbon Suboxide in Astrophysical
Ice Analogs.
Icarus,
154, 372-380.
PDF
Gerakines, P. A., Moore, M. H., and Hudson, R. L. (2001). Energetic Processing
of Laboratory Ice Analogs: UV Photolysis vs. Ion Bombardment.
JGR-Planets,
106, 33381-33386.
PDF
Hudson, R. L,. Moore, M. H., and Gerakines, P. A. (2001). Radiation Chemical
Alterations in Solar System Ices: An Overview.
JGR-Planets,
106, 33275-33284.
PDF
Cottin, H., Szopa, C., and Moore, M. H. (2001). Production of Hexamethylenetetramine
in Photolyzed and Irradiated Interstellar Cometary Ice Analogs.
Astrophysical
Journal Letters,
561, L139-L142.
PDF
Hudson, R. L., Moore, M. H., and Gerakines, P. A. (2001). The Formation
of Cyanate Ion (OCN
-) in Interstellar Ice Analogues.
Astrophysical Journal,
550, 1140-1150.
PDF
Moore, M. H., Hudson, R. L., and Gerakines, P. A. (2001). Mid- and Far-Infrared
Spectroscopic Studies of the Influence of Temperature, UV Photolysis and
Ion Bombardment on Cosmic-Type Ices.
Spectrochimica Acta,
57A,
843-858.
PDF
Gerakines, P. A., Moore, M. H., and Hudson, R. L. (2000). Carbonic Acid
Production in H
2O + CO
2 Ices: UV Photolysis vs. Proton Bombardment.
Astronomy
& Astrophysics,
357, 793-800.
PDF
Hudson, R. L. and Moore, M. H. (2000). New Experiments and Interpretations
Concerning the OCN
- Band in Interstellar Ice Analogues.
Astronomy & Astrophysics,
357,
787-792.
PDF
Hudson, R. L. and Moore, M. H. (2000). IR Spectra of Irradiated Cometary
Ice Analogues Containing Methanol: A New Assignment, A Reassignment,
and a Non-Assignment.
Icarus,
145, 661-663.
PDF
Moore, M. H. and Hudson R. L. (2000). IR Detection of H
2O
2 at 80 K
in Ion-Irradiated Laboratory Ices Relevant to Europa.
Icarus,
145, 282-288.
PDF
Ferrante, R. F., Moore, M. H., Nuth III, J. A., and Smith, T. (2000).
Formation of Carbon Compounds by Catalytic Conversion of CO on Laboratory
Grain Analogs Containing Iron.
Icarus,
145, 297-300.
PDF
Hudson, R. L. and Moore, M. H. (1999). Laboratory Studies of the Formation
of Methanol and Other Organic Molecules by Water + Carbon Monoxide Radiolysis:
Relevance to Comets, Icy Satellites, and Interstellar Ices.
Icarus,
140,
451-461.
PDF
Khanna, R. K. and Moore, M. H. (1999). Carbamic acid: Molecular Structure
and IR Spectra.
Spectrochimica Acta,
55A, 961-967.
PDF
Moore, M. H. and Hudson R. L. (1998). Infrared Study of Ion Irradiated
Water Ice Mixtures with Organics Relevant to Comets.
Icarus,
135,
518-527.
PDF
Hudson R. L. and Moore, M. H. (1997). Hydrocarbon Radiation Chemistry
in Ices of Cometary Relevance.
Icarus,
126, 233-235.
PDF
Moore, M. H., Ferrante, R. F., and Nuth, J. A., III (1996). Infrared Spectra
of Proton Irradiated Ices Containing Methanol.
Planetary and Space
Science,
44, 927-935.
PDF
Hudson, R. L. and Moore, M. H. (1995). Far-IR Spectral Changes Accompanying
Proton Irradiation of Solids of Astrochemical Interest.
Radiation Physics and Chemistry,
45, 779-789.
PDF
Moore, M. H., Ferrante, R. F., Hudson, R. L., Nuth, J. A., III, and Donn, B. (1994).
Infrared Spectra of Crystalline Phase Ices Condensed on Silicate Smokes at
T < 20 K.
Astrophysical Journal Letters,
428, L81-L84.
PDF
Moore, M. H. and Hudson, R. L. (1994). Far-Infrared Spectra of Cosmic-Type
Pure and Mixed Ices.
Astronomy & Astrophysics Supplement Series,
103,
45-56.
PDF
Hudson, R. L. and Moore, M. H. (1993). Far-Infrared Investigations of
a Methanol Clathrate Hydrate: Implications for Astronomical
Observations.
Astrophysical Journal Letters,
404,
L29-L32.
PDF
DelloRusso, N., Khanna, R. K., and Moore, M. H. (l993). Identification and Yield
of Carbonic Acid and Formaldehyde in Irradiated Ices.
JGR-Planets,
98,
E3, 5505-5510.
PDF
Moore, M. H. and Hudson, R. L. (1992). Far-Infrared Spectral Studies of Phase
Changes in Water Ice Induced by Proton Irradiation.
Astrophysical Journal,
401, 353-360.
PDF
Hudson, R. L. and Moore, M. H. (1992). A Far-IR Study of Irradiated
Amorphous Ice: An Unreported Oscillation Between Amorphous and Crystalline
Phases.
Journal of Physical Chemistry,
96, 6500-6504.
PDF
Nichols, R. H., Nuth III, J. A., Hohenberg, C. M., Olinger, C. T., and
Moore, M. H. (1992). Trapping of Noble Gases in Proton-Irradiated
Silicate Smokes.
Meteroritics,
27, 555-559.
PDF
Nuth, J. A. , Moore, M. H., Tanabe, T., and Kraus, G. (1992). The SiH
Vibrational Fundamental as an Indicator of the Oxidation State of Silicon
in a Cometary or Asteroidal Regolith.
Icarus,
98, 207-210.
Hudson, R. L. and Donn, B. (1992). Comments on 'Gas Release from Comets'
and Related Trapped-Gas Experiments.
Icarus,
96,
286-288.
PDF
Hudson, R. L. and Donn, B. (1991). An Experimental Study of the Sublimation
of Water Ice and the Release of Trapped Gases.
Icarus,
94,
326-332.
PDF
Moore, M. H., Khanna, K., and Donn, B. (1991). Studies Of Proton Irradiated
H
2O+CO
2 and H
2O+CO Ices and Analysis of Synthesized Molecules.
JGR-Planets,
96, 17541-17545.
PDF
Moore, M. H., Tanabe, T., and Nuth, J. (1991). The SiH Vibrational Stretch as
an Indicator of the Chemical State of Interstellar Grains.
Astrophysical Journal,
373, L31-L34.
PDF
Moore, M. H. and Khanna, R. (1991). Infrared and Mass Spectral Studies of Proton
Irradiated H
2O+CO
2 Ice: Evidence for Carbonic Acid.
Spectrochimica Acta,
47A, 255-262.
PDF
Moore, M. H. and Tanabe, T. (1990). Mass Spectra of Sputtered Polyoxymethylene--Implications
For Comets.
Astrophysical Journal Letters,
365, L39-L42.
PDF
Wdowiak, T., Donn, B., Nuth, J., Chappelle, E., and Moore, M. (1989).Laboratory Experiments
on Carbonaceous Material as a Source for the Red Rectangle Visual Emissions.
Astrophysical Journal,
336, 838-842.
PDF
Nuth, J. and Moore, M. H. (1988). SiH and the Unidentified
4.6 Micron Feature.
Astrophysical Journal,
329, L113-L116.
PDF
Nuth, J. A., Nelson, R. N., Moore, M. H., and Donn, B. (1988). Experimental
Studies of Circumstellar, Interstellar and Interplanetary Refractory Grains
Analogs. In: Experiments on Cosmic Dust Analogues (ed. Bussoletti,
et al.) Kluwer Acad. Pub., 191-207.
Moore, M. H., Donn, B., and Hudson, R. L. (1988). Study of S
2 in Ices: Implications
for Comets.
Icarus,
74, 399-412.
PDF
Moore, M. H. (1984). Infrared Studies of Proton Irradiated SO
2 Ices: Implications
for Io.
Icarus,
59, 114-128.
PDF
Moore, M. H., Donn, B., Khanna, R., and A'Hearn, M. F. (1983). Studies of
Proton Irradiated Cometary-Type Ice Mixtures.
Icarus,
54, 388-405.
PDF
Moore, M. H. and Donn, B.(1982). The Infrared Spectrum of a Laboratory-Synthesized
Residue: Implications for the 3.4 Micron Interstellar Absorption Feature.
Astrophysical Journal,
257, L47-L50.
PDF