Negative ion chemistry in Titan's upper atmosphere

Adams, 1996, Gas phase ionic reactions, 441

Bakes, 2002, Photoelectric charging of submicron aerosols and macromolecules in the Titan haze, Icarus, 157, 464, 10.1006/icar.2002.6843

Barckholtz, 2001, Reactions of Cn− and CnH− with atomic and molecular hydrogen, Astrophys. J., 547, L171, 10.1086/318909

Bartmess, 1979, Scale of acidities in the gas phase from methanol to phenol, J. Am. Chem. Soc., 101, 6046, 10.1021/ja00514a030

Berkowitz, 1996, Photoion-pair formation, 263

Berkowitz, 1969, Photoionization of HCN: the electron affinity and heat of formation of CN, J. Chem. Phys., 50, 1497, 10.1063/1.1671233

Bohme, 1975, The kinetics and energetics of proton transfer, 489

Bohme, 1969, Thermal reactions of O− ions with saturated hydrocarbon molecules, Can. J. Chem., 47, 2717, 10.1139/v69-447

Borucki, 1987, Predictions of the electrical conductivity and charging of the aerosols in Titan's atmosphere, Icarus, 72, 604, 10.1016/0019-1035(87)90056-X

Borucki, 2006, Predictions of the electrical conductivity and charging of the aerosols in Titan's atmosphere, Icarus, 181, 527, 10.1016/j.icarus.2005.10.030

Botschwina, 1996, The two lowest electronic states of C5N: results of coupled cluster calculations, Chem. Phys. Lett., 259, 627, 10.1016/0009-2614(96)00775-0

Bradforth, 1993, Photoelectron spectroscopy of CN−, NCO−, and NCS−, J. Chem. Phys., 98, 800, 10.1063/1.464244

Brünken, 2007, Detection of the carbon chain negative ion C8H− in TMC-1, Astrophys. J., 664, L43, 10.1086/520703

Capone, 1980, Cosmic ray synthesis of organic molecules in Titan's atmosphere, Icarus, 44, 72, 10.1016/0019-1035(80)90056-1

Capone, 1976, The lower ionosphere of Titan, Icarus, 28, 367, 10.1016/0019-1035(76)90150-0

Carrasco, 2007, Uncertainty analysis of bimolecular reactions in Titan ionosphere chemistry model, Planet. Space Sci., 55, 141, 10.1016/j.pss.2006.06.004

Cernicharo, 2007, Astronomical detection of C4H−, the second interstellar anion, Astron. Astrophys., 467, L37, 10.1051/0004-6361:20077415

Chupka, 1975, High resolution photoionization study of ion-pair formation in H2, HD, and D2, J. Chem. Phys., 63, 3929, 10.1063/1.431833

Coates, 2009, Interaction of Titan's ionosphere with Saturn's magnetosphere, Phil. Trans. R. Soc. A, 367, 773, 10.1098/rsta.2008.0248

Coates, 2007, Discovery of heavy negative ions in Titan's ionosphere, Geophys. Res. Lett., 34, L22103, 10.1029/2007GL030978

Coates, 2007, Ionospheric electrons in Titan's tail: plasma structure during the Cassini T9 encounter, Geophys. Res. Lett., 34, L24S05, 10.1029/2007GL030919

Coates, A.J., Wellbrock, A., Lewis, G.R., Jones, G.H., Young, D.T., Crary, F.J., Waite, J.H., 2009. Heavy negative ions in Titan's ionosphere: altitude and latitude dependence. Planet. Space Sci., this issue, doi:10.1016/j.pss.2009.05.009.

Compton, 1967, Negative-ion formation in H2O and D2O, Phys. Rev., 154, 110, 10.1103/PhysRev.154.110

Cowles, 1991, Photoelectron spectroscopy of CH2N−, J. Chem. Phys., 94, 3517, 10.1063/1.459773

Crary, F., Magee, B.A., Mandt, K., Waite, J.H. Jr., Westlake, J., Young, D.T., 2009. Heavy ions in Titan's ionosphere: a comparison of Cassini CAPS and INMS observations. Planet. Space Sci. This issue.

Cravens, 2006, Composition of Titan's ionosphere, Geophys. Res. Lett., 33, L07105, 10.1029/2005GL025575

Cravens, 2008, Energetic ion precipitation at Titan, Geophys. Res. Lett., 35, L03103, 10.1029/2007GL032451

Cravens, 2009, Model-data comparisons for Titan's nightside ionosphere, Icarus, 199, 174, 10.1016/j.icarus.2008.09.005

Cravens, 2004, The ionosphere of Titan: an updated theoretical model, Adv. Space Res., 33, 212, 10.1016/j.asr.2003.02.012

Cui, 2009, Analysis of Titan's neutral upper atmosphere from Cassini Ion Neutral Mass Spectrometer measurements, J. Geophys. Res., 200, 581

Davico, 1995, The C–H bond energy of benzene, J. Am. Chem. Soc., 117, 2590, 10.1021/ja00114a023

De Bleecker, 2006, Detailed modeling of hydrocarbon nanoparticle nucleation in acetylene discharges, Phys. Rev. E, 73, 026405, 10.1103/PhysRevE.73.026405

De Kok, 2007, Oxygen compounds in Titan's stratosphere as observed by Cassini CIRS, Icarus, 186, 354, 10.1016/j.icarus.2006.09.016

Deschenaux, 1999, Investigations of CH4, C2H2 and C2H4 dusty RF plasmas by means of FTIR absorption spectroscopy and mass spectrometry, J. Phys. D: Appl. Phys., 32, 1876, 10.1088/0022-3727/32/15/316

Dibeler, 1961, Mass spectrometric study of cyanogen and cyanoacetylenes, J. Am. Chem. Soc., 83, 1813, 10.1021/ja01469a011

Ellison, 1978, An experimental determination of the geometry and electron affinity of methyl radical, J. Am. Chem. Soc., 100, 2556, 10.1021/ja00476a054

Ervin, 1990, Bond strengths of ethylene and acetylene, J. Am. Chem. Soc., 112, 5750, 10.1021/ja00171a013

Fedor, 2006, Fragmentation of transient water anions following low-energy electron capture by H2O/D2O, J. Phys. B: At. Mol. Opt. Phys., 39, 3935, 10.1088/0953-4075/39/18/022

Fehsenfeld, 1975, Interaction between ions and molecules

Fehsenfeld, 1973, Thermal energy reactions of negative ions with H atoms in the gas phase, J. Chem. Phys., 58, 5841, 10.1063/1.1679215

Flasar, 2005, Titan's atmospheric temperatures, winds, and composition, Science, 308, 975, 10.1126/science.1111150

Gal, 2001, Acidity trends in α,β-unsaturated alkanes, silanes, germanes, and stannanes, J. Am. Chem. Soc., 123, 6353, 10.1021/ja004079j

Galand, 1999, The ionosphere of Titan: ideal diurnal and nocturnal cases, Icarus, 140, 92, 10.1006/icar.1999.6113

Galand, 2006, Electron temperature of Titan's sunlit ionosphere, Geophys. Res. Lett., 33, L21101, 10.1029/2006GL027488

Graupner, 2006, Dissociative electron attachment to HCCCN, New J. Phys., 8, 117, 10.1088/1367-2630/8/7/117

Gunion, 1992, Ultraviolet photoelectron spectroscopy of the phenide, benzyl, and phenoxide anions, with ab initio calculations, Int. J. Mass Spectrom. Ion Proc., 117, 601, 10.1016/0168-1176(92)80115-H

Hartle, 2006, Initial interpretation of Titan plasma interactions as observed by the Cassini Plasma Spectrometer: comparisons with Voyager 1. Planet, Space Sci., 54, 1211, 10.1016/j.pss.2006.05.029

Haxton, 2007, Dissociative electron attachment to the H2O molecule. II. Nuclear dynamics on coupled electronic surfaces within the local complex potential model, Phys. Rev. A, 75, 012711, 10.1103/PhysRevA.75.012711

Heni, 1986, Electron attachment by saturated nitriles, acrylonitrile (C2H3CN) and benzonitrile (C6H5CN), Int. J. Mass Spectrom. Ion Process., 73, 127, 10.1016/0168-1176(86)80014-3

Herbst, 2008, Calculations of the formation rates and mechanisms for CnH anions in interstellar and circumstellar media, Astrophys. J., 679, 1670, 10.1086/587803

Hickman, 1979, Approximate scaling formula for ion–ion mutual neutralization rates, J. Chem. Phys., 70, 4872, 10.1063/1.437364

Hotop, 1985, Binding energies in atomic negative ions: II, J. Phys. Chem. Ref. Data, 14, 731, 10.1063/1.555735

Howard, 1974, Negative ion–molecule reactions with atomic hydrogen in the gas phase at 296 °K, J. Chem. Phys., 60, 5086, 10.1063/1.1681027

Howling, 1994, Time-resolved measurements of highly polymerized negative ions in radio frequency silane plasma deposition experiments, J. Appl. Phys., 75, 1340, 10.1063/1.356413

Hörst, 2008, The origin of oxygen species in Titan's atmosphere, J. Geophys. Res., 113, E10006, 10.1029/2008JE003135

Inoue, 1966, Ions négatifs formés dans le cyanogène et l’acide cyanhydrique, J. Chim. Phys. Physico-Chim. Biol., 63, 1061, 10.1051/jcp/1966631061

Kass, 1985, Gas phase ion chemistry of azides. The generation of CHN− and CH2NCH2−, J. Org. Chem., 50, 2874, 10.1021/jo00216a014

Kim, 2000, 543

Krimigis, 2005, Dynamics of Saturn's magnetosphere from MIMI during Cassini's orbital insertion, Science, 307, 1270, 10.1126/science.1105978

Lara, 1996, Vertical distribution of Titan's atmospheric neutral constituents, J. Geophys. Res., 101, 23261, 10.1029/96JE02036

Lavvas, 2008, Coupling photochemistry with haze formation in Titan's atmosphere. Part I: Model description, Planet. Space Sci., 56, 27, 10.1016/j.pss.2007.05.026

Lavvas, 2008, Coupling photochemistry with haze formation in Titan's atmosphere. Part II: Results and validation with Cassini/Huygens data, Planet. Space Sci., 56, 67, 10.1016/j.pss.2007.05.027

Lavvas, 2009, The detached haze layer in Titan's mesosphere, Icarus, 201, 626, 10.1016/j.icarus.2009.01.004

Lebonnois, 2002, Transition from gaseous compounds to aerosols in Titan's atmosphere, Icarus, 159, 505, 10.1006/icar.2002.6943

Leopold, 1985, Methylene: a study of the X 3B1 and ã 1A1 states by photoelectron spectroscopy of CH2− and CD2−, J. Chem. Phys., 83, 4849, 10.1063/1.449746

Lequeux, 2005

Linder, D.R., Coates, A.J., 8 colleagues, 1998. The Cassini CAPS electron spectrometer. In: Pfaff, R.E., et al. (Eds.), Measurement Techniques in Space Plasmas: Particles. AGU Geophysical Monograph, pp. 257–262.

Mackay, 1976, Rate constant at 297K for proton-transfer reactions with hydrocyanic acid and acetonitrile. Comparisons with classical theories and exothermicity, J. Phys. Chem., 80, 2919, 10.1021/j100567a019

Mackay, 1977, Rate constants at 297K for proton-transfer reactions with C2H2: an assessment of the average quadrupole orientation theory, Int. J. Mass Spectrom. Ion Phys., 24, 125, 10.1016/0020-7381(77)80020-X

McCarthy, 2006, Laboratory and astronomical identification of the negative molecular ion C6H−, Astrophys. J., 652, L141, 10.1086/510238

Millar, 2007, Hydrocarbon anions in interstellar clouds and circumstellar envelopes, Astrophys. J., 662, L87, 10.1086/519376

Mitsuke, 1991, Negative-ion mass spectrometric study of ion-pair formation in the vacuum ultraviolet. IV. CH4→H−+CH3+ and CD4→D−+CD3+, J. Chem. Phys., 94, 6003, 10.1063/1.460435

Molina-Cuberos, 2000, Influence of electrophilic species on the lower ionosphere of Titan, Geophys. Res. Lett., 27, 1351, 10.1029/1999GL010771

Moran, 1987, Carbanion spectroscopy: cyanomethide anion (CH2CN−), J. Am. Chem. Soc., 109, 5996, 10.1021/ja00254a018

Oertel, 1980, Ion pair formation from photon irradiation of O2, NO and CO in 17–30eV, Chem. Phys., 46, 251, 10.1016/0301-0104(80)85201-3

Perrin, 1994, Possible routes for cluster growth and particle formation in RF silane discharges, Plasma Sources Sci. Technol., 3, 252, 10.1088/0963-0252/3/3/003

Petrie, 1996, Novel pathways to CN− within interstellar clouds and circumstellar envelopes: implications for IS and CS chemistry, Mon. Not. R. Astron. Soc., 281, 137, 10.1093/mnras/281.1.137

Petrie, 1997, Some interstellar reactions involving electrons and neutral species: Attachment and isomerization, Astrophys. J., 491, 210, 10.1086/304941

Raksit, 1983, An experimental study of the influence of hydration on the reactivity of the hydroxide anion in the gas phase at room temperature, Can. J. Chem., 61, 1683, 10.1139/v83-287

Rapp, 1965, Total cross sections for ionization and attachment in gases by electron impact. II. Negative-ion formation, J. Chem. Phys., 43, 1480, 10.1063/1.1696958

Remijan, 2007, Detection of C8H− and comparison with C8H toward IRC +10216, Astrophys. J., 664, L47, 10.1086/520704

Ruscic, 1990, Photoion-pair formation and photoelectron-induced dissociative attachment in C2H2: D0(HCC-H), J. Chem. Phys., 93, 5586, 10.1063/1.459629

Rutkowski, 1980, Investigation of the inelastic interaction of slow monoenergetic electrons with simple hydrocarbon molecules, Ann. Phys., 7, 259

Sailer, 2003, Low energy electron attachment to CH3CN, Chem. Phys. Lett., 381, 216, 10.1016/j.cplett.2003.09.118

Schulz, 1982, OH− and OD− threshold photodetachment, J. Chem. Phys., 77, 1153, 10.1063/1.443980

Sharp, 1967, Isotope effects in dissociative attachment of electrons in methane, J. Chem. Phys., 46, 1530, 10.1063/1.1840885

Shiell, 2000, Threshold ion-pair production spectroscopy (TIPPS) of H2 and D2, Faraday Discuss., 115, 331, 10.1039/a909428h

Smith, 1978, Mutual neutralization of simple and clustered positive and negative ions, J. Chem. Phys., 68, 1224, 10.1063/1.435842

Smith, 2006, The temperature-dependence of rapid low temperature reactions: experiment, understanding and prediction, Faraday Discuss., 133, 137, 10.1039/b600721j

Stamatovic, 1970, Dissociative attachment in CO and formation of C−, J. Chem. Phys., 53, 2663, 10.1063/1.1674387

Taft, 1988, Regarding the inherent dependence of resonance effects of strongly conjugated substituents on electron demand, J. Am. Chem. Soc., 110, 1797, 10.1021/ja00214a023

Taylor, 1998, Photoelectron spectra of the C2nH− (n=1–4) and C2nD− (n=1–3) anions, J. Chem. Phys., 108, 10018, 10.1063/1.476462

Teanby, 2006, Latitudinal variations of HCN, HC3N, and C2N2 in Titan's stratosphere derived from Cassini CIRS data, Icarus, 181, 243, 10.1016/j.icarus.2005.11.008

Thaddeus, 2008, Laboratory and astronomical detection of the negative molecular ion C3N−, Astrophys. J., 677, 1132, 10.1086/528947

Toublanc, 1995, Photochemical modeling of Titan's atmosphere, Icarus, 113, 2, 10.1006/icar.1995.1002

Tsuda, 1973, Measurement of negative ions formed by electron impact. IX. Negative ion mass spectra and ionization efficiency curves of negative ions of m/e 25, 26, 27, 38, 39, 40 and 50 from acrylonitrile, Bull. Chem. Soc. Japan, 46, 2273, 10.1246/bcsj.46.2273

Viggiano, 1983, Temperature dependence of associative detachment reactions, J. Chem. Phys., 79, 2241, 10.1063/1.446073

Vinatier, 2007, Vertical abundance profiles of hydrocarbons in Titan's atmosphere at 15°S and 80°N retrieved from Cassini/CIRS spectra, Icarus, 188, 120, 10.1016/j.icarus.2006.10.031

Vuitton, 2006, The nitrogen chemistry of Titan's upper atmosphere revealed, Astrophys. J., 647, L175, 10.1086/507467

Vuitton, 2008, Formation and distribution of benzene on Titan, J. Geophys. Res., 113, E05007, 10.1029/2007JE002997

Vuitton, 2007, Ion chemistry and N-containing molecules in Titan's upper atmosphere, Icarus, 191, 722, 10.1016/j.icarus.2007.06.023

Waite, 2007, The process of tholin formation in Titan's upper atmosphere, Science, 316, 870, 10.1126/science.1139727

Wickham-Jones, 1989, NH2 electron affinity, J. Chem. Phys., 91, 2762, 10.1063/1.456994

Wilson, 2003, Chemical sources of haze formation in Titan's atmosphere, Planet. Space Sci., 51, 1017, 10.1016/j.pss.2003.06.003

Woods, 2008, Recent advances in the observations and modeling of the solar ultraviolet and X-ray spectral irradiance, Adv. Space Res., 42, 895, 10.1016/j.asr.2007.09.026

Woods, 2005, Solar EUV Experiment (SEE): Mission overview and first results, J. Geophys. Res., 110, A01312, 10.1029/2004JA010765

Yelle, 2006, The vertical structure of Titan's upper atmosphere from Cassini Ion Neutral Mass Spectrometer measurements, Icarus, 182, 567, 10.1016/j.icarus.2005.10.029

Young, 2004, Cassini plasma spectrometer investigation, Space Sci. Rev., 114, 1, 10.1007/s11214-004-1406-4

Yung, 1984, Photochemistry of the atmosphere of Titan: comparison between model and observations, Astrophys. J. Suppl. Ser., 55, 465, 10.1086/190963