W. J. Borucki, Z. Levin, R. C. Whitten, R. G. Keesee, L. A. Capone et al., Predictions of the electrical conductivity and charging of the aerosols in Titan's atmosphere, Predictions of the Electrical Conductivity and Charging of the Aerosols in Titan's Atmosphere, pp.604-622, 1987.
DOI : 10.1016/0019-1035(87)90056-X

E. A. Boucher, Nucleation in the Atmosphere, pp.527-572, 1969.

P. Bruston, M. J. Et, and . Mumma, Solar system exploration from the moon: Synoptic and comparative study of bodies in our planetary system, Advances in Space Research, vol.14, issue.6, pp.143-158, 1994.
DOI : 10.1016/0273-1177(94)90021-3

P. Bruston, F. Et, and . Raulin, Planetology and the origins of life: From space exploration to exobiology, and related interdisciplinary programs, Planetary and Space Science, vol.43, issue.1-2, pp.1-2, 1995.
DOI : 10.1016/0032-0633(94)00222-D

M. Cabane, E. Chassefière, and G. Israël, Formation and growth of photochemical aerosols in Titan's atmosphere, Icarus, vol.96, issue.2, pp.176-189, 1992.
DOI : 10.1016/0019-1035(92)90071-E

M. Cabane, P. Rannou, E. Chassefière, and G. Israël, Fractal aggregates in Titan's atmosphere, Planetary and Space Science, vol.41, issue.4, pp.257-267, 1993.
DOI : 10.1016/0032-0633(93)90021-S

J. Centrella, J. R. Et, and . Wilson, Planar numerical cosmology. II - The difference equations and numerical tests, The Astrophysical Journal Supplement Series, vol.54, pp.229-249, 1984.
DOI : 10.1086/190927

URL : http://www.osti.gov/scitech/servlets/purl/5205926

S. Chandrasekhar, Stochastic Problems in Physics and Astronomy, Reviews of Modern Physics, vol.15, issue.1, pp.1-89, 1943.
DOI : 10.1103/RevModPhys.15.1

E. Chassefière, M. Et, and . Cabane, Two formation regions for Titan's hazes: indirect clues and possible synthesis mechanisms, Planetary and Space Science, vol.43, issue.1-2, pp.91-103, 1995.
DOI : 10.1016/0032-0633(94)00138-H

R. Clift, J. R. Grace, and M. E. Weber, Bubbles, Drops, and Particles, 1978.

P. Coll, D. Coscia, M. Gazeau, L. Guez, and F. Raulin, Review and Latest Results of Laboratory Investigations of Titan's Aerosols, Origins of Life, 1998.

R. Courtin, D. Gautier, and C. P. Mckay, Titan's Thermal Emission Spectrum: Reanalysis of the Voyager Infrared Measurements, Icarus, vol.114, issue.1, pp.144-162, 1995.
DOI : 10.1006/icar.1995.1050

A. Cousténis, B. Bézard, and D. Gautier, Titan's atmosphere from voyager infrared observations, Icarus, vol.80, issue.1, pp.54-76, 1989.
DOI : 10.1016/0019-1035(89)90161-9

C. N. Davies, Definitive equations for the fluid resistance of spheres, Proc. Phys. Soc. 57 (part 4, pp.322-326, 1945.
DOI : 10.1088/0959-5309/57/4/301

C. N. Davies, Evaporation of Airborne Droplets In Fundamentals of Aerosol Science, 1978.

M. Dobrijevic, Etude de la physico-chimie de l'atmosphère de Neptune, Thèse de 3ème cycle, 1996.

N. Dubouloz, F. Raulin, E. Lellouch, and D. Gautier, Titan's hypothesized ocean properties: The influence of surface temperature and atmospheric composition uncertainties, Icarus, vol.82, issue.1, pp.81-96, 1989.
DOI : 10.1016/0019-1035(89)90025-0

W. J. Dunning, General and Theoretical Introduction, 1969.

P. S. Epstein, On the Resistance Experienced by Spheres in their Motion through Gases, Physical Review, vol.23, issue.6, pp.710-733, 1924.
DOI : 10.1103/PhysRev.23.710

G. Feher, Z. Et, and . Kam, [4]Nucleation and growth of protein crystals: General principles and assays, Crystallization and Treatment of Crystals, pp.77-111, 1985.
DOI : 10.1016/0076-6879(85)14006-1

F. M. Flasar, Oceans on Titan?, Science, vol.221, issue.4605, pp.55-57, 1983.
DOI : 10.1126/science.221.4605.55

F. M. Flasar, R. E. Samuelson, and B. J. Conrath, Titan's atmosphere: temperature and dynamics, Nature, vol.31, issue.5825, pp.693-698, 1981.
DOI : 10.1038/292693a0

C. Frère, Etude physico-chimique de l'atmosphère, de l'aérosol et de l'océan de Titan, Thèse de 3ème cycle, 1989.

C. Frère, F. Raulin, G. Israël, and M. Cabane, Microphysical modeling of titan's aerosols: Application to the in situ analysis, Advances in Space Research, vol.10, issue.1, pp.159-163, 1990.
DOI : 10.1016/0273-1177(90)90099-L

N. A. Fuchs, Evaporation and Droplet Growth in Gaseous Media, Journal of Applied Mechanics, vol.27, issue.4, 1959.
DOI : 10.1115/1.3644122

N. A. Fuchs, A. G. Et, and . Sutugin, High-Dispersed Aerosols Oxford, Pergamon press, In Topics in Current Aerosol Research. Hidy G. M. et J, 1971.

D. Gautier, The Composition of the Titan Atmosphere, Proceedings of the International Workshop on the Atmospheres of Saturn and, 1985.

C. A. Griffith, T. Owen, and R. Wagener, Titan's surface and troposphere, investigated with ground-based, near-infrared observations, Icarus, vol.93, issue.2, pp.362-378, 1991.
DOI : 10.1016/0019-1035(91)90219-J

L. Guez, P. Bruston, F. Raulin, and C. Régnaut, Importance of phase changes in Titan's lower atmosphere. Tools for the study of nucleation, Planetary and Space Science, vol.45, issue.6, pp.611-625, 1997.
DOI : 10.1016/S0032-0633(97)00018-4

P. Hamill, O. B. Toon, and C. S. Kiang, Microphysical Processes Affecting Stratospheric Aerosol Particles, Journal of the Atmospheric Sciences, vol.34, issue.7, pp.1104-1119, 1977.
DOI : 10.1175/1520-0469(1977)034<1104:MPASAP>2.0.CO;2

J. F. Hawley, L. L. Smarr, and J. R. Wilson, A numerical study of nonspherical black hole accretion. II - Finite differencing and code calibration, The Astrophysical Journal Supplement Series, vol.55, issue.2, pp.211-246, 1984.
DOI : 10.1086/190953

W. C. Hinds, Aerosol Technology. Properties, Behavior and Measurement of Airborne Particles, 1982.

J. P. Hirth, G. M. Et, and . Pound, Condensation and Evaporation. Nucleation and Growth Kinetics, Progress in Materials Science (incorporating Progress in Metal Physics, 1963.

F. Hourdin, O. Talagrand, R. Sadourny, R. Courtin, D. Gautier et al., Numerical Simulation of the General Circulation of the Atmosphere of Titan, Icarus, vol.117, issue.2, pp.358-374, 1995.
DOI : 10.1006/icar.1995.1162

W. T. Hutzell, C. P. Mckay, O. B. Toon, and F. Hourdin, Simulations of Titan's Brightness by a Two-Dimensional Haze Model, Icarus, vol.119, issue.1, pp.112-129, 1996.
DOI : 10.1006/icar.1996.0005

Z. Jin, K. Liu, and W. Sheng, Vapor-liquid equilibrium in binary and ternary mixtures of nitrogen, argon, and methane, Journal of Chemical & Engineering Data, vol.38, issue.3, pp.353-355, 1993.
DOI : 10.1021/je00011a004

F. Kasten, Falling Speed of Aerosol Particles, Journal of Applied Meteorology, vol.7, issue.5, pp.944-947, 1968.
DOI : 10.1175/1520-0450(1968)007<0944:FSOAP>2.0.CO;2

J. F. Kasting, CO2 condensation and the climate of early Mars, Icarus, vol.94, issue.1, pp.1-13, 1991.
DOI : 10.1016/0019-1035(91)90137-I

R. G. Keesee, Nucleation and particle formation in the upper atmosphere, Journal of Geophysical Research: Atmospheres, vol.90, issue.D12, 1989.
DOI : 10.1029/JD094iD12p14683

L. C. Kouvaris, F. M. Et, and . Flasar, Phase equilibrium of methane and nitrogen at low temperatures: Application to Titan, Icarus, vol.91, issue.1, 1991.
DOI : 10.1016/0019-1035(91)90131-C

L. M. Lara, E. Lellouch, J. J. López-moreno, and R. Rodrigo, Vertical distribution of Titan's atmospheric neutral constituents, Journal of Geophysical Research: Planets, vol.43, issue.E10, pp.261-284, 1996.
DOI : 10.1029/96JE02036

L. M. Lara, R. D. Lorenz, and R. Rodrigo, Liquids and solids on the surface of Titan: results of a new photochemical model, Planetary and Space Science, vol.42, issue.1, pp.5-14, 1994.
DOI : 10.1016/0032-0633(94)90135-X

E. Lellouch, Atmospheric Models of Titan and Triton, Ann. Geophys, vol.8, issue.10, pp.653-660, 1990.

E. Lellouch, A. Cousténis, D. Gautier, F. Raulin, N. Dubouloz et al., Titan's atmosphere and hypothesized ocean: A reanalysis of the Voyager 1 radio-occultation and IRIS 7.7-??m data, Icarus, vol.79, issue.2, pp.328-349, 1989.
DOI : 10.1016/0019-1035(89)90081-X

R. J. Leveque and . Zürich, Numerical Methods for Conservation Laws, 1992.

D. R. Lide, CRC Handbook of Chemistry and Physics, 1996.

G. F. Lindal, G. E. Wood, H. B. Hotz, D. N. Sweetnam, V. R. Eshleman et al., The atmosphere of Titan: An analysis of the Voyager 1 radio occultation measurements, Icarus, vol.53, issue.2, pp.348-363, 1983.
DOI : 10.1016/0019-1035(83)90155-0

R. D. Lorenz, The life, death and afterlife of a raindrop on Titan, Planetary and Space Science, vol.41, issue.9, pp.647-655, 1993.
DOI : 10.1016/0032-0633(93)90048-7

R. D. Lorenz, The Surface of Titan in the Context of ESA's Huygens Probe, ESA J, vol.17, issue.4, pp.275-292, 1993.

J. I. Lunine, B. Et, and . Rizk, Thermal evolution of Titan's atmosphere, Icarus, vol.80, issue.2, pp.370-389, 1989.
DOI : 10.1016/0019-1035(89)90147-4

H. Lüth, Surfaces and Interfaces of Solids, 1993.
DOI : 10.1007/978-3-662-10159-9

J. E. Mcdonald, Homogeneous Nucleation of Vapor Condensation. I. Thermodynamic Aspects, American Journal of Physics, vol.30, issue.12, pp.870-877, 1962.
DOI : 10.1119/1.1941841

J. E. Mcdonald, Homogeneous Nucleation of Vapor Condensation. II. Kinetic Aspects, American Journal of Physics, vol.31, issue.1, pp.31-41, 1963.
DOI : 10.1119/1.1969234

C. P. Mckay, Elemental composition, solubility, and optical properties of Titan's organic haze, Planetary and Space Science, vol.44, issue.8, pp.741-747, 1996.
DOI : 10.1016/0032-0633(96)00009-8

C. P. Mckay, S. C. Martin, C. A. Griffith, and R. M. Keller, Temperature Lapse Rate and Methane in Titan's Troposphere, Icarus, vol.129, issue.2, 1996.
DOI : 10.1006/icar.1997.5751

C. P. Mckay, J. B. Pollack, and R. Courtin, The thermal structure of Titan's atmosphere, Icarus, vol.80, issue.1, pp.23-53, 1989.
DOI : 10.1016/0019-1035(89)90160-7

C. P. Mckay, J. B. Pollack, and R. Courtin, The greenhouse and antigreenhouse effects on Titan, Science, vol.88, issue.4630, pp.1118-1121, 1991.
DOI : 10.1126/science.222.4630.1283

C. P. Mckay, J. B. Pollack, J. I. Lunine, and R. Courtin, Coupled Atmosphere-Ocean Models of Titan's Past, Icarus, vol.102, issue.1, pp.88-98, 1993.
DOI : 10.1006/icar.1993.1034

J. I. Moses, M. Allen, and Y. L. Yung, Hydrocarbon nucleation and aerosol formation in Neptune's atmosphere, Icarus, vol.99, issue.2, pp.318-346, 1992.
DOI : 10.1016/0019-1035(92)90149-2

J. S. Neff, D. C. Humm, J. T. Bergstralh, A. L. Cochran, W. D. Cochran et al., Absolute Spectrophotometry of Titan, Icarus, vol.60, issue.2, pp.3500-10500, 1984.

P. Nozières, Shape and Growth of Crystals In Solids Far from Equilibrium, 1991.

W. F. Phillips, Drag on a small sphere moving through a gas, Physics of Fluids, vol.18, issue.9, pp.1089-1093, 1975.
DOI : 10.1063/1.861292

H. R. Pruppacher, J. D. Et, and . Klett, Microphysics of Clouds and Precipitation, Aerosol Science and Technology, vol.28, issue.4, 1978.
DOI : 10.1080/02786829808965531

K. Rages, J. B. Et, and . Pollack, Vertical distribution of scattering hazes in Titan's upper atmosphere, Icarus, vol.55, issue.1, pp.50-62, 1983.
DOI : 10.1016/0019-1035(83)90049-0

K. Rages, J. B. Pollack, and P. H. Smith, Size estimates of Titan's aerosols based on Voyager high-phase-angle images, Journal of Geophysical Research: Space Physics, vol.18, issue.A11, pp.8721-8728, 1983.
DOI : 10.1029/JA088iA11p08721

P. Rannou, M. Cabane, and E. Chassefière, Growth of aerosols in Titan's atmosphere and related time scales: A stochastic approach, Geophysical Research Letters, vol.90, issue.10, pp.967-970, 1993.
DOI : 10.1029/93GL00911

P. Rannou, M. Cabane, E. Chassefière, R. Botet, C. P. Mckay et al., Titan's Geometric Albedo: Role of the Fractal Structure of the Aerosols, Icarus, vol.118, issue.2, pp.355-372, 1995.
DOI : 10.1006/icar.1995.1196

F. Raulin, Organic chemistry in the oceans of Titan, Advances in Space Research, vol.7, issue.5, pp.71-81, 1987.
DOI : 10.1016/0273-1177(87)90358-9

F. Raulin, P. Bruston, P. Coll, D. Coscia, M. Gazeau et al., Exobiology on Titan, Journal of Biological Physics, vol.93, issue.3, pp.39-53, 1994.
DOI : 10.1007/BF00700419

P. N. Romani, J. Bishop, B. Bézard, and S. Atreya, Methane Photochemistry on Neptune: Ethane and Acetylene Mixing Ratios and Haze Production, Icarus, vol.106, issue.2, pp.442-463, 1993.
DOI : 10.1006/icar.1993.1184

C. Sagan, W. R. Et, and . Thompson, Production and condensation of organic gases in the atmosphere of Titan, Icarus, vol.59, issue.2, pp.133-161, 1984.
DOI : 10.1016/0019-1035(84)90018-6

J. H. Seinfeld, Atmospheric Chemistry and Physics of Air Pollution, 1986.

R. A. Sigsbee, Vapor to Condensed-Phase Heterogeneous Nucleation, pp.151-224, 1969.
DOI : 10.1016/0001-8686(67)80007-1

G. R. Smith, D. F. Strobel, A. L. Broadfoot, B. R. Sandel, D. E. Shemansky et al., Titan's upper atmosphere: Composition and temperature from the EUV solar occultation results, Journal of Geophysical Research: Space Physics, vol.87, issue.A3, pp.1351-1359, 1982.
DOI : 10.1029/JA087iA03p01351

G. Steiner, S. J. Et, and . Bauer, Molecular and Eddy Diffusion in the Atmosphere of Titan, Ann. Geophys, vol.8, pp.7-8, 1990.

W. R. Thompson, Phase Equilibria in N 2 -Hydrocarbon Systems Application to Titan Proceedings of the International workshop on the atmospheres of Saturn and Titan. Alpbach, Austria, 1985.

W. R. Thompson, G. D. Mcdonald, and C. Sagan, The Titan Haze Revisited: Magnetospheric Energy Sources and Quantitative Tholin Yields, Icarus, vol.112, issue.2, pp.376-381, 1994.
DOI : 10.1006/icar.1994.1191

W. R. Thompson, J. A. Zollweg, and D. H. Gabis, Vapor-liquid equilibrium thermodynamics of N2 + CH4: Model and Titan applications, Icarus, vol.97, issue.2, pp.187-199, 1992.
DOI : 10.1016/0019-1035(92)90127-S

M. G. Tomasko and P. H. Smith, Photometry and polarimetry of Titan: Pioneer 11 observations and their implications for aerosol properties, Icarus, vol.51, issue.1, pp.65-95, 1982.
DOI : 10.1016/0019-1035(82)90030-6

O. B. Toon, C. P. Mckay, R. Courtin, and T. P. Ackerman, Methane rain on Titan, Icarus, vol.75, issue.2, pp.255-284, 1988.
DOI : 10.1016/0019-1035(88)90005-X

O. B. Toon, C. P. Mckay, C. A. Griffith, and R. P. Turco, A physical model of Titan's aerosols, Icarus, vol.95, issue.1, pp.24-53, 1992.
DOI : 10.1016/0019-1035(92)90188-D

O. B. Toon, R. P. Turco, and J. B. Pollack, A physical model of Titan's clouds, Icarus, vol.43, issue.3, pp.260-282, 1980.
DOI : 10.1016/0019-1035(80)90173-6

D. Toublanc, J. P. Parisot, J. Brillet, D. Gautier, F. Raulin et al., Photochemical Modeling of Titan's Atmosphere, Icarus, vol.113, issue.1, pp.2-26, 1995.
DOI : 10.1006/icar.1995.1002

M. Trabelsi, J. P. Et, and . Coulomb, Thermodynamic study of ethane thin films adsorbed on MgO(100) powder, Surface Science, vol.272, issue.1-3, pp.352-357, 1992.
DOI : 10.1016/0039-6028(92)91462-K

R. C. Weast, CRC Handbook of Chemistry and Physics, 1977.

R. A. West, A. L. Lane, H. Hart, K. E. Simmons, C. W. Hord et al., Voyager 2 photopolarimeter observations of Titan, Journal of Geophysical Research: Space Physics, vol.112, issue.A11, pp.88-8699, 1983.
DOI : 10.1029/JA088iA11p08699

R. A. West and P. H. Smith, Evidence for aggregate particles in the atmospheres of Titan and Jupiter, Icarus, vol.90, issue.2, pp.330-333, 1991.
DOI : 10.1016/0019-1035(91)90113-8

R. V. Yelle, Non-LTE models of Titan's upper atmosphere, The Astrophysical Journal, vol.383, pp.380-400, 1991.
DOI : 10.1086/170796

Y. L. Yung, M. Allen, and J. P. Pinto, Photochemistry of the atmosphere of Titan - Comparison between model and observations, The Astrophysical Journal Supplement Series, vol.55, pp.465-506, 1984.
DOI : 10.1086/190963