Solar System Exploration Division

Reggie L. Hudson

(RESEARCH AST, FIELDS AND PARTICLES)

 reggie.hudson@nasa.gov

 301.286.6961

Org Code: 691

NASA/GSFC
Mail Code: 691
Greenbelt, MD 20771

Employer: NASA

Brief Bio


Reggie Hudson is a research scientist working at the NASA Goddard Space Flight Center.  To learn more about him, his work, and his colleagues, visit the web pages of the Cosmic Ice Laboratory.

Education


1978 - Ph.D., Physical Chemistry, University of Tennessee (Knoxville, TN)

1974 - A.B., Chemistry and Mathematics, Pfeiffer University (Misenheimer, NC)

Positions/Employment


Research Astrochemist

NASA Goddard Space Flight Center - Greenbelt, Maryland USA

January 2009 - Present

Member of the Cosmic Ice Laboratory research group; Associate Chief for the Astrochemistry Laboratory (2011-2018); Acting Chief for the Planetary Systems Laboratory (2010-2011)


Lecturer

Department of Astronomy, University of Maryland - College Park, Maryland, USA

January 2010 - June 2018


Professor of Chemistry

Eckerd College - St. Petersburg, Florida USA

September 1978 - December 2008

(tenured faculty member)


Visiting Research Professor of Chemistry

University College London - London, England

August 1985 - July 1986

Teaching Experience


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)

Professional Societies


American Chemical Society: Chemical Education, Physical, and History Divisions

1974 - Present


Royal Society of Chemistry (U.K.): Education and Faraday Divisions

1986 - Present


American Astronomical Society: Division for Planetary Sciences, Laboratory Astrophysics Division

1998 - Present


American Geophysical Union

2000 - Present


Sigma Xi

1977 - Present

Professional Service


Chair, Astrochemistry Subdivision, American Chemical Society (2016-2017)

Awards


2023 Laboratory Astrophysics Prize (American Astronomical Society, AAS)

John M. Bevan Award for Teaching Excellence and Campus Leadership, September 2008 (Eckerd College)

Lloyd W. Chapin Award for Excellence in Scholarship, September 2005 (Eckerd College)

Selected Publications


Refereed

Hudson, R. L., and P. A. Gerakines. 2023. Infrared Spectra and Vapor Pressures of Crystalline C2N2, with Comparisons to Crystalline HCN The Planetary Science Journal 4 (11): 205 [10.3847/psj/ad0040]

Hudson, R. L. 2023. Interstellar tryptophan revisited Monthly Notices of the Royal Astronomical Society 526 (3): 4051-4053 [10.1093/mnras/stad3058]

Hudson, R. L., P. A. Gerakines, and Y. Yarnall. 2023. Infrared spectra and optical constants of astronomical ices: V. cyclopropane and ethylene oxide Icarus 396 115499 [10.1016/j.icarus.2023.115499]

Gerakines, P. A., C. K. Materese, and R. L. Hudson. 2023. Carbon monoxide ices – a semicentennial review and update for crystalline CO along with the first IR spectrum and band strength for amorphous CO Monthly Notices of the Royal Astronomical Society 522 (2): 3145-3162 [10.1093/mnras/stad1164]

Hudson, R. L., and P. A. Gerakines. 2023. Influences on Infrared Spectra of Benzene Ices for Titan, Comets, and Beyond: Annealings, Artifacts, and Isosbestic Points The Planetary Science Journal 4 (3): 55 [10.3847/psj/acc337]

Yarnall, Y. Y., and R. L. Hudson. 2022. Infrared intensities of methyl acetate, an interstellar compound - comparisons of three organic esters Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 283 121738 [10.1016/j.saa.2022.121738]

Hudson, R. L., Y. Yarnall, and P. A. Gerakines (he/him). 2022. Benzene Vapor Pressures at Titan Temperatures: First Microbalance Results The Planetary Science Journal 3 (5): 120 [10.3847/PSJ/ac67a5]

Qasim, D., R. L. Hudson, and C. K. Materese. 2022. Radiation-induced D/H Exchange Rate Constants in Aliphatics Embedded in Water Ice The Astrophysical Journal 929 (2): 7 [10.3847/1538-4357/ac602b]

Yarnall, Y., and R. L. Hudson. 2022. A New Method for Measuring IR Band Strengths in H2O-Ices: First Results for OCS, H2S, and SO2 The Astrophysical Journal Letters [10.3847/2041-8213/ac6b32]

Hudson, R. L., and Y. Y. Yarnall. 2022. Infrared Spectra and Intensities of Amorphous and Crystalline Allene ACS Earth and Space Chemistry [10.1021/acsearthspacechem.1c00339]

Hudson, R. L., Y. Yarnall, and P. A. Gerakines. 2022. Infrared Spectral Intensities of Amine Ices, Precursors to Amino Acids Astrobiology 22 (4): 452-461 [10.1089/ast.2021.0138]

Gerakines, P. A., D. Qasim, S. Frail, and R. L. Hudson. 2022. Radiolytic Destruction of Uracil in Interstellar and Solar System Ices Astrobiology 22 (3): 233-241 [10.1089/ast.2021.0053]

Hudson, R. L., P. A. Gerakines, and Y. Yarnall. 2022. Ammonia Ices Revisited: New IR Intensities and Optical Constants for Solid NH3 The Astrophysical Journal 925 (2): 156 [10.3847/1538-4357/ac3e74]

Yarnall, Y. Y., and R. L. Hudson. 2022. Crystalline ices – Densities and comparisons for planetary and interstellar applications Icarus 373 114799 [10.1016/j.icarus.2021.114799]

Gerakines, P. A., Y. Y. Yarnall, and R. L. Hudson. 2022. Direct measurements of infrared intensities of HCN and H2O + HCN ices for laboratory and observational astrochemistry Monthly Notices of the Royal Astronomical Society 509 (3): 3515-3522 [10.1093/mnras/stab2992]

Hudson, R. L., and Y. Yarnall. 2022. Infrared Spectra and Optical Constants of Astronomical Ices: IV. Benzene and Pyridine Icarus [10.1016/j.icarus.2022.114899]

Mclain, J. L., M. Loeffler, W. M. Farrell, et al. C. I. Honniball, J. W. Keller, and R. L. Hudson. 2021. Hydroxylation of Apollo 17 Soil Sample 78421 by Solar Wind Protons Journal of Geophysical Research-Planets [https://doi.org/10.1029/2021JE006845]

Hudson, R., B. Theiling, D. Bower, et al. H. Graham, M. Trainer, C. Nixon, and S. Milam. 2021. Laboratory Studies in Support of the Exploration of Ocean Worlds and NASA Missions Vol. 53, Issue 4 (Planetary/Astrobiology Decadal Survey Whitepapers) 53 (4): [10.3847/25c2cfeb.935e24ec]

Materese, C. K., P. A. Gerakines, and R. L. Hudson. 2021. Laboratory Studies of Astronomical Ices: Reaction Chemistry and Spectroscopy Accounts of Chemical Research 54 (2): 280-290 [10.1021/acs.accounts.0c00637]

Hudson, R. L., P. A. Gerakines, Y. Y. Yarnall, and R. T. Coones. 2021. Infrared spectra and optical constants of astronomical ices: III. Propane, propylene, and propyne Icarus 354 114033 [10.1016/j.icarus.2020.114033]

Gerakines, P. A., and R. L. Hudson. 2020. A Modified Algorithm and Open-source Computational Package for the Determination of Infrared Optical Constants Relevant to Astrophysics The Astrophysical Journal 901 (1): 52 [10.3847/1538-4357/abad39]

Hudson, R. L., Y. Y. Yarnall, and F. M. Coleman. 2020. Infrared band strengths and other properties of amorphous and crystalline dimethyl ether Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 233 118217 [10.1016/j.saa.2020.118217]

Hudson, R. L., and R. F. Ferrante. 2020. Mid-infrared spectra of dipropargyl ether ices revisited Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 233 118206 [10.1016/j.saa.2020.118206]

Materese, C. K., P. A. Gerakines, and R. L. Hudson. 2020. The Radiation Stability of Thymine in Solid H2O Astrobiology 20 (10): 956-963 [10.1089/ast.2019.2199]

Yarnall, Y. Y., P. A. Gerakines, and R. L. Hudson. 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 (4): 4606–4615 [10.1093/mnras/staa1028]

Hudson, R. L. 2020. Preparation, identification, and low-temperature infrared spectra of two elusive crystalline nitrile ices Icarus 338 113548 [10.1016/j.icarus.2019.113548]

Hudson, R. L., M. J. Loeffler, R. F. Ferrante, P. A. Gerakines, and F. M. Coleman. 2020. Testing Densities and Refractive Indices of Extraterrestrial Ice Components Using Molecular Structures—Organic Compounds and Molar Refractions The Astrophysical Journal 891 (1): 22 [10.3847/1538-4357/ab6efa]

Hudson, R. L., and R. F. Ferrante. 2020. Quantifying acetaldehyde in astronomical ices and laboratory analogues: IR spectra, intensities, <sup>13</sup>C shifts, and radiation chemistry Monthly Notices of the Royal Astronomical Society [10.1093/mnras/stz3323]

Hudson, R. L., and F. M. Coleman. 2019. Solid-State Isomerization and Infrared Band Strengths of Two Conformational Isomers of Cyclopropanecarboxaldehyde, a Candidate Interstellar Molecule ACS Earth and Space Chemistry 3 (7): 1182-1188 [10.1021/acsearthspacechem.9b00058]

Hudson, R. L., and F. M. Coleman. 2019. Infrared intensities and molar refraction of amorphous dimethyl carbonate – comparisons to four interstellar molecules Physical Chemistry Chemical Physics 21 (21): 11284-11289 [10.1039/c9cp01709g]

Hudson, R. L., and P. A. Gerakines. 2019. Molecular identifications in experiments with astronomical ice analogues: new data, old strategies, and the N2 + acetone system Monthly Notices of the Royal Astronomical Society 485 (1): 861-871 [10.1093/mnras/stz254]

Hudson, R. L., and P. A. Gerakines. 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 (3): 4009-4017 [10.1093/mnras/sty2821]

Hudson, R. L., and E. F. Mullikin. 2019. Infrared band strengths for amorphous and crystalline methyl propionate, a candidate interstellar molecule Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 207 216-221 [10.1016/j.saa.2018.09.032]

Hudson, R. L., and P. A. Gerakines. 2018. Infrared Spectra and Interstellar Sulfur: New Laboratory Results for H<sub>2</sub>S and Four Malodorous Thiol Ices The Astrophysical Journal 867 (2): 138 [10.3847/1538-4357/aae52a]

Hudson, R. L., and M. H. Moore. 2018. Interstellar Ices and Radiation-induced Oxidations of Alcohols The Astrophysical Journal 857 (2): 89 [10.3847/1538-4357/aab708]

Hudson, R. L., P. A. Gerakines, and R. F. Ferrante. 2018. IR spectra and properties of solid acetone, an interstellar and cometary molecule Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 193 33-39 [10.1016/j.saa.2017.11.055]

Loeffler, M. J., and R. L. Hudson. 2018. Coloring Jupiter's clouds: Radiolysis of ammonium hydrosulfide (NH 4 SH) Icarus 302 418-425 [10.1016/j.icarus.2017.10.041]

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 (8): 5389-5398 [10.1039/c7cp06431d]

Hudson, R. L., M. J. Loeffler, and K. M. Yocum. 2017. Laboratory Investigations into the Spectra and Origin of Propylene Oxide: A Chiral Interstellar Molecule The Astrophysical Journal 835 (2): 225 [10.3847/1538-4357/835/2/225]

Hudson, R. L., M. J. Loeffler, and P. A. Gerakines. 2017. Infrared spectra and band strengths of amorphous and crystalline N<sub>2</sub>O The Journal of Chemical Physics 146 (2): 024304 [10.1063/1.4973548]

Loeffler, M. J., and R. L. Hudson. 2016. What is Eating Ozone? Thermal Reactions between SO2 and O3: Implications for Icy Environments The Astrophysical Journal 833 (1): L9 [10.3847/2041-8213/833/1/l9]

Loeffler, M. J., R. L. Hudson, N. J. Chanover, and A. A. Simon. 2016. The Spectrum of Jupiter's Great Red Spot: The Case for Ammonium Hydrosulfide (NH4SH) Icarus 271 265-268 [10.1016/j.icarus.2016.02.010]

Hudson, R. L. 2016. Infrared Spectra and Band Strengths of CH<sub>3</sub>SH, an Interstellar Molecule Phys. Chem. Chem. Phys. 18 (36): 25756-25763 [10.1039/c6cp01475e]

Gerakines, P. A., and R. L. Hudson. 2015. First infrared band strengths for amorphous CO2, an overlooked component of interstellar ices The Astrophysical Journal Letters 808 (2): L40 [10.1088/2041-8205/808/2/L40]

Gerakines, P. A., and R. L. Hudson. 2015. Infrared spectra and optical constants of elusive amorphous methane Astrophysical Journal Letters 805 (2): L20 [10.1088/2041-8205/805/2/L20]

Hudson, R. L., P. A. Gerakines, and M. J. Loeffler. 2015. Activation of weak IR fundamentals of two species of astrochemical interest in the Td point group – the importance of amorphous ices Physical Chemistry Chemical Physics 17 (19): 12545-12552 [10.1039/C5CP00975H]

Gerakines, P. A., and R. L. Hudson. 2015. The radiation stability of glycine in solid CO2 – In situ laboratory measurements with applications to Mars Icarus 252 466-472 [10.1016/j.icarus.2015.02.008]

Loeffler, M. J., and R. L. Hudson. 2015. Descent without Modification? The Thermal Chemistry of H2O2 on Europa and Other Icy Worlds Astrobiology 15 453-461 [10.1089/ast.2014.1195]

Loeffler, M. J., R. L. Hudson, N. Chanover, and A. A. Simon. 2015. Giant-Planet Chemistry: Ammonium Hydrosulfide (NH4SH), its IR Spectra and Thermal and Radiolytic Stabilities Icarus 258 181–191 [10.1016/j.icarus.2015.06.015]

Hudson, R. L., P. A. Gerakines, and M. H. Moore. 2014. Infrared Spectra and Optical Constants of Astronomical Ices: II. Ethane and Ethylene Icarus 243 147-148 [10.1016/j.icarus.2014.09.001]

Hudson, R. L., R. F. Ferrante, and M. H. Moore. 2014. Infrared Spectra and Optical Constants of Astronomical Ices: I. Amorphous and Crystalline Acetylene Icarus 228 276-287 [10.1016/j.icarus.2013.08.029]

Callahan, M. P., P. A. Gerakines, M. G. Martin, Z. Peeters, and R. L. Hudson. 2013. Irradiated benzene ice provides clues to meteoritic organic chemistry Icarus 226 (2): 1201-1209 [10.1016/j.icarus.2013.07.033]

Hudson, R. L., and M. J. Loeffler. 2013. Ketene Formation in Interstellar Ices: A Laboratory Study The Astrophysical Journal 773 773-782

Loeffler, M. J., and R. L. Hudson. 2013. Low-temperature Thermal Reactions between SO2 and H2O2 and their Relevance to the Jovian Icy Satellites Icarus 224 257-259 [10.1016/j.icarus.2013.02.005]

Gerakines, P. A., and R. L. Hudson. 2013. Glycine's Radiolytic Destruction in Ices: First in situ Laboratory Measurements for Mars Astrobiology 13 647-655 [10.1089/ast.2012.0943]

Gerakines, P. A., R. L. Hudson, M. H. Moore, and J.-L. Bell. 2012. In-situ Measurements of the Radiation Stability of Amino Acids at 15 - 140 K Icarus 220 647-659 [10.1016/j.icarus.2012.06.001]

Knez, C., M. H. Moore, R. F. Ferrante, and R. L. Hudson. 2012. Laboratory IR Studies and Astrophysical Implications of C2H2-Containing Binary Ices The Astrophysical Journal 748 95 [10.1088/0004-637X/748/2/95]

Loeffler, M. J., and R. L. Hudson. 2012. Thermal Regeneration of Sulfuric Acid Hydrates after Irradiation Icarus 219 561-566 [10.1016/j.icarus.2012.03.023]

Loeffler, M. J., R. L. Hudson, M. H. Moore, and R. W. Carlson. 2011. Radiolysis of Sulfuric Acid, Sulfuric Acid Monohydrate, and Sulfuric Acid Tetrahydrate and its Relevance to Europa Icarus 215 370-380 [10.1016/j.icarus.2011.06.008]

Loeffler, M. J., and R. L. Hudson. 2010. Thermally-Induced Chemistry and the Jovian Icy Satellites: A Laboratory Study of the Formation of Sulfur Oxyanions Geophysical Research Letters 37 19201 [10.1029/2010GL044553]

Cooper, P. D., M. H. Moore, and R. L. Hudson. 2010. O-atom Production in Water Ice: Implications for O2 Formation on Icy Satellites J. Geophys. Res. 115 E10013

Peeters, Z., R. L. Hudson, M. H. Moore, and A. Lewis. 2010. The Formation and Stability of Carbonic Acid on Outer Solar System Bodies Icarus 210 480-487

Moore, M. H., R. F. Ferrante, W. J. Moore, and R. L. Hudson. 2010. Infrared Spectra and Optical Constants of Nitrile Ices Relevant to Titan's Atmosphere Astrophysical Journal - Supplement 191 96-112

Hudson, R. L., A. S. Lewis, M. H. Moore, J. P. Dworkin, and M. P. Martin. 2009. Enigmatic Isovaline: Investigating the Stability, Racemization, and Formation of a Non-Biological Meteoritic Amino Acid Astronomical Society of the Pacific Bioastronomy 2007: Molecules, Microbes, and Extraterrestrial Life

Carlson, R. W., W. M. Calvin, J. B. Dalton, et al. G. B. Hansen, R. L. Hudson, R. E. Johnson, T. B. McCord, and M. H. Moore. 2009. Europa Europa's Surface Composition University of Arizona Press Europa

Hudson, R. L., M. H. Moore, and L. L. Raines. 2009. Ethane Ices in the Outer Solar System: Spectroscopy and Chemistry Icarus 203 677-680

Hudson, R. L., M. E. Palumbo, G. Strazzulla, et al. M. H. Moore, J. Cooper, and S. J. Sturmer. 2008. Laboratory Studies of the Chemistry of TNO Surface Materials The Solar System Beyond Neptune

Hudson, R. L., M. H. Moore, J. P. Dworkin, M. G. Martin, and Z. D. Pozun. 2008. Amino Acids from Ion-Irradiated Nitrile-Containing Ices Astrobiology 8 771-779 [10.1089/ast.2007.0131]

Ferrante, R. F., M. H. Moore, M. M. Spiliotis, and R. L. Hudson. 2008. Formation of Interstellar OCS: Radiation Chemistry and IR Spectra of Precursor Ices Astrophysical Journal 684 1210-1220

Cooper, P. D., M. H. Moore, and R. L. Hudson. 2008. Radiation Chemistry of H2O + O2 Ices Icarus 194 379-388 [10.1016/j.icarus.2007.10.002]

Moore, M. H., R. F. Ferrante, R. L. Hudson, and J. N. Stone. 2007. Ammonia - Water Ice Laboratory Studies Relevant to Outer Solar System Surfaces Icarus 190 260-273 [10.1016/j.icarus.2007.02.020]

Moore, M. H., R. L. Hudson, and R. W. Carlson. 2007. The Radiolysis of SO2 and H2S in Water Ice: Implications for the Icy Jovian Satellites Icarus 189 409-423 [10.1016/j.icarus.2007.01.018]

Cooper, P. D., M. H. Moore, and R. L. Hudson. 2006. Infrared Detection of HO2 and HO3 Radicals in Water Ice J. Phys. Chem. A 110 7985-7988 [10.1021/jp062765k]

Hudson, R. L., and M. H. Moore. 2006. Infrared Spectra and Radiation Stability of H2O2 Ices Relevant to Europa Astrobiology 6 483-489

Hudson, R. L. 2006. Astrochemistry Examples in the Classroom Journal of Chemical Education 83 1611-1615

Moore, M. H., and R. L. Hudson. 2006. Production of Complex Molecules in Astrophysical Ices Astrochemistry: Recent Successes and Current Challenges 231 (Proceedings IAU Sym.): 247-260

Hudson, R. L., R. K. Khanna, and M. H. Moore. 2005. Laboratory Evidence for Solid-Phase Protonation of HNCO in Interstellar Ices Astrophysical Journal - Supplement Series 159 277-281

Hudson, R. L., M. H. Moore, and A. M. Cook. 2005. IR Characterization and Radiation Chemistry of Glycolaldehyde and Ethylene Glycol Ices Advances in Space Research 36 184-189

Ruiterkamp, R., Z. Peeters, M. H. Moore, R. L. Hudson, and P. Ehrenfreund. 2005. A Quantitative Study of Proton Irradiation and UV Photolysis of Benzene in Interstellar Environments Astronomy & Astrophysics 440 391-402

Colangeli, L., J. R. Brucato, A. Bar-Nun, R. L. Hudson, and M. H. Moore. 2005. Laboratory Experiments on Cometary Materials Comets II 695-717

Gerakines, P. A., M. H. Moore, and R. L. Hudson. 2004. Ultraviolet Photolysis and Proton Irradiation of Astrophysical Ice Analogs Containing Hydrogen Cyanide Icarus 170 (1): 202-213 [10.1016/j.icarus.2004.02.005]

Hudson, R. L., and M. H. Moore. 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 [10.1016/j.icarus.2004.06.011]

Moore, M. H., R. L. Hudson, and R. F. Ferrante. 2003. Radiation Products in Processed Ices Relevant to Edgeworth-Kuiper-Belt Objects Earth, Moon, and Planets 92 291-306

Hudson, R. L., and M. H. Moore. 2003. Solid-Phase Formation of Interstellar Vinyl Alcohol Astrophysical Journal 586 L107-L110

Moore, M. H., and R. L. Hudson. 2003. Infrared Study of Ion-Irradiated N2-Dominated Ices Relevant to Triton and Pluto: Formation of HCN and HNC Icarus 161 486-500 [10.1016/S0019-1035(02)00037-4]

Hudson, R. L., and M. H. Moore. 2002. The N3 Radical as a Discriminator Between Ion-Irradiated and UV-Photolyzed Astronomical Ices Astrophysical Journal 568 1095-1099

Hudson, R. L., M. H. Moore, and P. A. Gerakines. 2001. The Formation of Cyanate Ion (OCN<sup>-</sup>) in Interstellar Ice Analogs The Astrophysical Journal 550 (2): 1140-1150 [10.1086/319799]

Moore, M. H., R. L. Hudson, and P. A. Gerakines. 2001. Mid- and Far-Infrared Spectroscopic Studies of the Influence of Temperature, Ultraviolet Photolysis, and Ion Irradiation on Cosmic-Type Ices Spectrochimica Acta A 57 (4): 843-858 [10.1016/S1386-1425(00)00448-0]

Gerakines, P. A., M. H. Moore, and R. L. Hudson. 2001. Energetic Processing of Laboratory Ice Analogs: UV Photolysis vs. Ion Bombardment Journal of Geophysical Research: Planets 106 (E12): 33381-33386 [10.1029/2000JE001320]

Hudson, R. L., and M. H. Moore. 2001. Radiation Chemical Alterations in Solar System Ices: An Overview Journal of Geophysical Research: Planets 106 (E12): 33275-33284

Gerakines, P. A., M. H. Moore, and R. L. Hudson. 2000. Carbonic Acid Production in H<sub>2</sub>O:CO<sub>2</sub> ices UV Photolysis vs Proton Bombardment Astronomy & Astrophysics 357 793-800

Hudson, R. L., and M. H. Moore. 2000. New Experiments and Interpretations Concerning the OCN- Band in Interstellar Ice Analogues Astronomy & Astrophy 357 787-792

Hudson, R. L., and M. H. Moore. 2000. IR Spectra of Irradiated Cometary Ice Analogues Containing Methanol: A New Assignment, a Reassignment, and a Non-Assignment Icarus 145 661-663

Moore, M. H., and R. L. Hudson. 2000. IR Detection of H2O2 at 80 K in Ion-Irradiated Laboratory Ices Relevant to Europa Icarus 145 282-288

Hudson, R. L., and M. H. Moore. 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

Moore, M. H., and R. L. Hudson. 1998. Infrared Study of Ion Irradiated Water Ice Mixtures with Organics Relevant to Comets Icarus 135 518-527

Hudson, R. L. 1997. Hydrocarbon Radiation Chemistry in Ices of Cometary Relevance Icarus 126 233-235

Hudson, R. L., and M. H. Moore. 1995. Far-IR Spectral Changes Accompanying Proton Irradiation of Solids of Astrochemical Interest Radiation Physics and Chemistry 45 779-789

Moore, M. H., and R. L. Hudson. 1994. Far-Infrared Spectra of Cosmic-Type Pure and Mixed Ices Astronomy & Astrophysics Supplement Series 103 45-56

Moore, M. H., R. F. Ferrante, R. L. Hudson, J. A. Nuth, and B. Donn. 1994. Infrared Spectra of Crystalline Phase Ices Condensed on Silicate Smokes at T<20K ApJ Letters 428 L81-L84

Hudson, R. L., and M. H. Moore. 1993. Far-Infrared Investigations of a Methanol Clathrate Hydrate: Implications for Astronomical Observations Astrophysical Journal Letters 404 L29-L32

Moore, M. H., and R. L. Hudson. 1992. Far-Infrared Spectral Studies of Phase Changes in Water Ice Induced by Proton Irradiation Astrophysical Journal 401 353-360

Hudson, R. L., and M. H. Moore. 1992. A Far-IR Study of Irradiated Amorphous Ice: An Unreported Oscillation Between Amorphous and Crystalline Phases Journal of Physical Chemistry 96 6500-6504

Hudson, R. L., and B. Donn. 1992. Comments on 'Gas Release from Comets' and Related Trapped-Gas Experiments Icarus 96 286-288

Hudson, R. L., and B. Donn. 1991. An Experimental Study of the Sublimation of Water Ice and the Release of Trapped Gases Icarus 94 326-332

Moore, M. H., B. Donn, and R. L. Hudson. 1988. Study of S2 in Ices: Implications for Comets Icarus 74 399-412