Ha Tran, Jean-Michel Hartmann, G. Li, V. Ebert, Super Lorentzian effects on the wings of self-broadened HCl and of HCl diluted in Ar, J.of Physics, 810, 012039, 10.1088/1742-6596/810/1/012039, 2017
Publications de Jean-Michel HARTMANN au LISA
Lin K., P. Lu, J. Ma, X. Gong, Q.Song, Q. Ji, W. Zhang, H. Zeng, J. Wu, G. Karras, Guillaume Siour, Jean-Michel Hartmann, O. Faucher, E. Gershnabel, Y. Prior and I.Sh. Averbukh, Echoes in space and time, Phys. Rev. X, 6, https://doi.org/10.1103/PhysRevX.6.041056, 2016
Vander Auwera J, Boulet C, Carré Y, Kocon L, Jean-Michel Hartmann, Confinement-induced infrared absorption by H2 and N2 gases in a porous silica aerogel, JQSRT, 182, 193-198, 2016
G. Karras, E. Hertz, F. Billard, B. Lavorel, Guillaume Siour, Jean-Michel Hartmann, O. Faucher, Erez Gershnabel, Yehiam Prior, Ilya Sh. Averbukh, Experimental observation of fractional echoes, Physical Review, 94, 033404, 10.1103/PhysRevA.94.033404, 2016
Steinitz U., Y. Khodorkovsky, Jean-Michel Hartmann, I.S. Averbuk, Dynamics and hydrodynamics of molecular superrotor, ChemPhysChem, 17, 3795-3810, 10.1002/cphc.201600508, 2016
Thibault Delahaye, Xavier Landsheere, Edouard Pangui, F. Huet, Jean-Michel Hartmann, Ha Tran, Measurements of H2O-broadening coefficients of O2 A-band lines, J. Quant. Spectros. Rad. Transf., 184, 316-321, https://doi.org/10.1016/j.jqsrt.2016.07.019, 2016
Jean-Michel Hartmann, Xavier Landsheere, Boulet C., Sarkisyan D., Sarkisyan A-S., Leroy C., Infrared look at the spectral effects of sub-micron confinements of CO2 gas, Phys Rev A, 93, 012516, 2016
Xavier Landsheere, Edouard Pangui, Boulet C., Jean-Michel Hartmann, Reflection spectroscopy study of the 16O12C16O nu_3-band lines, JQSRT, 174, 1-6, 2016
Thibault Delahaye, Xavier Landsheere, Edouard Pangui, Huet F., Jean-Michel Hartmann, Ha Tran, Measurements of H2O broadening coefficients of infrared methane lines, JQSRT, 173, 40-48, 2016
Thibault Delahaye, Xavier Landsheere, Edouard Pangui, F. Huet, Jean-Michel Hartmann, Ha Tran, Broadening of CO2 lines in the 4.3 μm region by H2O, J. Mol. Spectros., 326, 17-20, https://doi.org/10.1016/j.jms.2016.02.007, 2016
Chaussard F, Vieillard T, Billard F, Faucher O, Jean-Michel Hartmann, Boulet C, Lavorel B., Dissipation of post-pulse laser-induced alignment of CO2 through collisions with Ar., J. Raman Spectroscopy, 46, 691-694, 2015
Ha Tran, Vander Auwera J, Xavier Landsheere, Ngo NH, Edouard Pangui, Morales SB, El Hamzaoui H, Capoen B, Bouazaoui M, Boulet C, Jean-Michel Hartmann, Infrared light on molecule-molecule and molecule-surface collisions, Phys Rev A, 92, 012707, 2015
Khodorkovsky Y., U. Steinitz, Jean-Michel Hartmann, I. Sh. Averbukh, Collisional dynamics in a gas of molecular super-rotors, Nature-Communications, 6, 7791, 10.1038/ ncomms8791, 2015 PDF
G. Karras, E. Hertz, F. Billard, B. Lavorel, Jean-Michel Hartmann, O. Faucher , E. Gershnabel, Y. Prior, I.S. Averbukh, Orientation and Alignment Echoes, Phys. Rev. Lett., 114, 153601, 2015
Julien Lamouroux, L. Régalia, X. Thomas, J. Vander Auwera, R.R. Gamache, Jean-Michel Hartmann, CO2 line-mixing database and software update and its tests in the 2.1 μm and 4.3 μm regions, J. Quant. Spectros. Rad. Transf., 151, 88-96, 2015
Tennyson J., P. F. Bernath, A. Campargue, A.G. Csaszar, L. Daumont, R. R. Gamache, J. T. Hodges, D. Lisak, O.V. Naumenko, L. S. Rothman, Ha Tran, N. F. Zobov, J. Buldyreva, C. D. Boone, M. D. De Vizia, L. Gianfrani, Jean-Michel Hartmann, R. McPheat, J. Murray, N. H. Ngo, O. L. Polyansky and D. Weidmann, Recommended isolated-line profile for representing high-resolution spectroscopic transitions (IUPAC Technical Report), Pure Appl. Chem., 86, 1931-1943, 2014
Ngo N.H., Xavier Landsheere, Edouard Pangui, S.B. Morales, Jean-Michel Hartmann, Self-broadening of 16O12C16O ν3-band lines, J. Mol. Spectros., 306, 33-36, 2014
Ngo N.H., Xavier Landsheere, Edouard Pangui, S.B. Morales, Ha Tran, Jean-Michel Hartmann, Self-broadening and -shifting of very intense lines of the 1-0 band of 12C16O, J. Quant. Spectros. Rad. Transf., 145, 285-290, 2014
Morales S. B., Edouard Pangui, Xavier Landsheere, Ha Tran, Jean-Michel Hartmann, Variable-length cell for studies of gas spectra with extremely short optical paths, Appl. Optics, 53, 4117-4122, 2014
Karras G., E. Hertz, F. Billard, B. Lavorel, Jean-Michel Hartmann, O. Faucher, Using molecular alignment to track ultrafast collisional relaxation, Phys. Rev. A, 89, 063411, 2014
Julien Lamouroux, V. Sironneau, J.T. Hodges, Jean-Michel Hartmann, Isolated line shapes of molecular oxygen: Requantized classical molecular dynamics calculations versus measurements, Phys. Rev. A, 89, 042503, 2014
Larcher G., Ha Tran, Martin Schwell, Pascale Chelin, Xavier Landsheere, Jean-Michel Hartmann, and S.-M. Hu, CO2 isolated line shapes by classical molecular dynamics simulations: Influence of the intermolecular potential and comparison with new measurements, J. Chem. Phys., 140, 084308 doi.org/10.1063/1.4866449, 2014
Jean-Michel Hartmann, C. Boulet, J. Vander Auwera, H. El Hamzaoui, B. Capoen and M. Bouazaoui, Line broadening of confined CO gas: from molecule-wall to molecule-molecule collisions with pressure, J. Chem. Phys., 140, 064302, doi.org/10.1063/1.4864205, 2014
Bussery-Honvault B. , Jean-Michel Hartmann, Ab initio calculations for the far infrared collision induced absorption by N2 gas, J. Chem. Phys., 140, 054309 doi.org/10.1063/1.4863636, 2014
Vander Auwera J., N. H. Ngo, H. El Hamzaoui, B. Capoen, M. Bouazaoui,, Patrick Ausset, C. Boulet, Jean-Michel Hartmann, Infrared absorption by molecular gases as a probe of nanoporous silica xerogel and molecule-surface collisions: Low-pressure results, Phys. Rev. A, DOI: 10.1103/PhysRevA.88.042506, 2013
Ha Tran, N. H. Ngo, Jean-Michel Hartmann, Efficient computation of some speed-dependent isolated line profiles, J. Quant. Spectrosc. Rad. Trans., 129, 199-203, 2013
Rothman L. S., I. E. Gordon, Y. Babikov, A. Barbe, D. Chris Benner, P. F. Bernath, M. Birk, L. Bizzocchi, V. Boudon, L. R. Brown, A. Campargue, K. Chance, E. A. Cohen, Laurent Coudert, V. M. Devi, B. J. Drouin, A. Fayt, Jean-Marie Flaud, R. R. Gamache, J.J. Harrison, Jean-Michel Hartmann, C. Hill, J.T. Hodges, D. Jacquemart, Antoine Jolly, Julien Lamouroux, R. J. LeRoy, G. Li, D. A. Long, O. M. Lyulin, C. J. Mackie, S. T. Massie, S. Mikhailenko, H. S. P. Müller, O. V. Naumenko, Nikitin A. V., J. Orphal, V. Perevalov, Agnes Perrin, E. R. Polovtseva, C. Richard, M. A. H. Smith, E. Starikova, K. Sung, S. Tashkun, J. Tennyson, G. C. Toon, Vl. G. Tyuterev and G. Wagner, The HITRAN2012 Molecular Spectroscopic Database, J. Quant. Spectrosc. Rad. Trans., 130, 4-50, 2013
Ngo N.H., D. Lisak, Ha Tran, Jean-Michel Hartmann, An isolated line-shape model to go beyond the Voigt profile in spectroscopic databases and radiative transfer codes, J. Quant. Spectros. Radiat. Transfer, 129, 89-100, 2013
Jean-Michel Hartmann, C. Boulet, T. Vieillard, F. Chaussard, F. Billard, O. Faucher and B.Lavorel, Dissipation of alignment in CO2 gas: A comparison between ab initio predictions and experiments, J. Chem. Phys, 139, Article Number: 024306 DOI: 10.1063/1.4812770, 2013
Jean-Michel Hartmann, V. Sironneau, C. Boulet, T. Svensson, J. T. Hodges and C. T. Xu, Collisional broadening and spectral shapes of absorption lines of free and nanopore-confined O2 gas, Phys. Rev. A, 87, 032510 DOI:10.1103/PhysRevA.87.032510, 2013
Jean-Michel Hartmann, Ha Tran, Ngo, N. H., Xavier Landsheere, Pascale Chelin, Lu, Y., Liu, A. -W., Hu, S. -M., Gianfrani, L., Casa, G., Castrillo, A., Lepere, M., Deliere, Q., Dhyne, M. and Fissiaux, L., Ab initio calculations of the spectral shapes of CO2 isolated lines including non-Voigt effects and comparisons with experiments, Phys. Rev. A, 87, 10.1103/PhysRevA.87.013403, 2013
Julien Lamouroux, Jean-Michel Hartmann, Ha Tran, B. Lavorel, M. Snels, S. Stefani, S. and G. Piccioni, Molecular dynamics simulations for CO2 spectra. IV. Collisional line-mixing in infrared and Raman bands, J. Chem. Phys., 138, 244310, 2013
Ha Tran, N. H. Ngo, Jean-Michel Hartmann, R. R. Gamache, D. Mondelain, S. Kassi, A. Campargue, L. Gianfrani, A. Castrillo, E. Fasci and F. Rohart, Velocity effects on the shape of pure H2O isolated lines: Complementary tests of the partially correlated speed-dependent Keilson-Storer model, J. Chem. Phys., 138, 034302 doi.org/10.1063/1.4774094, 2013
Vieillard Th., F. Chaussard, F. Billard, D. Sugny, O. Faucher, S. Ivanov, Jean-Michel Hartmann, C. Boulet and B. Lavorel, Field-free molecular alignment for probing collisional relaxation dynamics, Phys. Rev. A, 87, doi.org/10.1103/ PhysRevA.87.023409, 2013
Gamache R. R., J. Lamouroux, A. L. Laraia, Jean-Michel Hartmann, C.Boulet, Semiclassical calculations of half-widths and line shifts for transitions in the 30012?00001 and 30013?00001 bands of CO2 I: Collisions with N2, J. Quant. Spectros. Radiat. Transfer, 113, 976-990, 2012
Jean-Michel Hartmann, C. Boulet, Quantum and classical approaches for rotational relaxation and nonresonant laser alignment of linear molecules : a comparison for CO2 gaz in the nonadiabatic regime, J. Chem. Phys., 136, 184302, doi.org/10.1063/1.4705264, 2012
Houzet, J., Gateau, J., Hertz, E., Billard, F., Lavorel, B., Jean-Michel Hartmann, Boulet, C. and Faucher, O., Probing ultrafast thermalization with field-free molecular alignment, Phys. Rev. A, 86, Article nu, 2012
Lamouroux J., R. R. Gamache, A. L. Laraia, Jean-Michel Hartmann, C.Boulet, Semiclassical calculations of half-widths and line shifts for transitions in the 30012?00001 and 30013?00001 bands of CO2 II: Collisions with O2 and air, J. Quant. Spectros. Radiat. Transfer, 113, 991-1003, 2012
Lamouroux J., R. R. Gamache, A. L. Laraia, Jean-Michel Hartmann, C.Boulet, Semiclassical calculations of half-widths and line shifts for transitions in the 30012?00001 and 30013?00001 bands of CO2 III: Self collisions, J. Quant. Spectros. Radiat. Transfer, 113, 1536-1546, 2012
Ngo N.H., N. Ibrahim, Xavier Landsheere, Ha Tran, Pascale Chelin, Martin Schwell, Jean-Michel Hartmann, Intensities and shapes of H2O lines in the near-infrared by tunable diode laser spectroscopy, J. Quant. Spectrosc. Rad. Trans., 113, 870-877, 2012
N. H. Ngo, Ha Tran, R. R. Gamache, Jean-Michel Hartmann, Pure effects on water vapor lines: beyond the Voigt profile, Phil. Trans. Royal Soc. A, 370, 2495-2508, 2012
Richard C., I.E. Gordon, L.S. Rothman, M. Abel, L. Frommhold, M. Gustafsson, Jean-Michel Hartmann, C. Hermans, W.J. Lafferty, G.S. Orton, K.M. Smith, Ha Tran, New section of the HITRAN database: Collision-induced absorption (CIA), J. Quant. Spectrosc. Rad. Trans., 113, 1276-1285, 2012
Butz, A., Guerlet, S., Hasekamp, O., Schepers, D., Galli, A., Aben, I., Frankenberg, C., Jean-Michel Hartmann, Ha Tran, Kuze, A., Keppel-Aleks, G., Toon, G., Wunch, D., Wennberg, P., Deutscher, N., Griffith, D., Macatangay, R., Messerschmidt, J., Notholt, J. and , T. Warneke, Toward accurate CO2 and CH4 observations from GOSAT, Geophys. Res. Lett., 38, DOI: 10.1029/2011GL047888, 2011
Jean-Michel Hartmann, C. Boulet and D. Jacquemard, Molecular dynamics simulations for CO2 absorption spectra. II. The far infrared collision-induced absorption band, J. Chem. Phys., 134, DOI: 10.1063/1.3557681, 2011
Jean-Michel Hartmann, JM, Boulet C, Molecular dynamics simulations for CO2 absorption spectra. III. Permanent and collision-induced tensors contributions to light absorption and scattering, J. Chem. Phys., 134, 184312, 2011
>Koubek, J., C. Boulet, Agnes Perrin, S. Urban, Jean-Michel Hartmann, Line-mixing between rotational Stark components of CH3F self-perturbed and perturbed by helium: Experimental results and IOS analysis, J. Mol. Spectros., 266, 12-20, 2011
Ha Tran, F. Thibault, Jean-Michel Hartmann, Collision induced velocity changes from molecular dynamic simulations in H2-Ar: A test of the Keilson-Storer model and of line-broadening/shifting calculations for the Q(1) Raman line., JQSRT, 112, 1035-1042, 2011
Ha Tran, Benedicte Picquet-Varrault, C.Boursier, C.Viatte, Maxim Eremenko, F. Hase, Jean-Michel Hartmann, Non-Voigt line-shape effects on retrievals of atmospheric ozone: Line-mixing effects, J. Quant. Spectrosc. Radiat. Transf., 112, 2287-2295, 2011
Jean-Michel Hartmann, C. Boulet, Ha Tran, M. T. Nguyen, Molecular dynamics simulations for CO2 absorption spectra. I. Line broadening and the fa wing of the n3 infrared band, J. Chem. Phys, 2010
Lamouroux J., Ha Tran, A. L. Laraia, R. R. Gamache, L.S. Rothman, I.E. Gordon, Jean-Michel Hartmann, Updated database plus software for line-mixing in CO2 infrared spectra and their test using laboratory spectra in the 1.5-2.3 mm region, J. Quant. Spectrosc. Radiat. Transf, 111, 2321-2331, 2010
Ha Tran, F. Rohart, C. Boone, Maxim Eremenko, F. Hase, P. Bernath, Jean-Michel Hartmann, Non-Voigt line-shape effects on retrievals of atmospheric ozone: collisionally isolated lines, J. Quant. Spectrosc. Radiat. Transf., 111, doi:10.1016/j.jqsrt.2010.04.002, 2010
Ha Tran, Jean-Michel Hartmann, G. Toon, L. R. Brown, C. Frankenberg, T. Warneke, P. Spietz and F. Hase, The 2n3 band of CH4 broadened by N2 revisited with line-mixing. Consequences for spectroscopic data, laboratory and atmospheric spectra at 1.67 µm, J. Quant. Spectrosc. Radiat. Transf., 111, 1344-1356, 2010
Doizi, D., Dauvois, V., Roujou, J. L., Lorin, V., Fauvet, P., Larousse, B., Carles, P., Jean-Michel Hartmann, Experimental study of the vapour-liquid equilibria of HI-I(2)-H(2)O ternary mixtures, Part 1: Experimental results around the atmospheric pressure, Int. J. Hydrogen Ener., 34, 4275-4282, 2009
Gomez, Martin L., Ha Tran, Agnes Perrin, R. R. Gamache, A. Laraia, J. Orphal, Pascale Chelin, C. E. Fellows, Jean-Michel Hartmann, Some improvements of the HNO3 spectroscopic parameters in the spectral region from 600 to 950 cm-1, J. Quant. Spectrosc. Radiat. Transf, 110, 675-686, 2009
Jean-Michel Hartmann, A simple empirical model for the collisional spectral shift of air-broadened CO(2) lines, J. Quant. Spectrosc. Radiat. Transf., 110, 2019-2026, 2009
Jean-Michel Hartmann, Laurent Coudert, D. Doizi, V. Dauvois, J.-L. Roujou, V. Lorin, B. Larousse, P. Fauvet and P. Carles, Speciation of the gaseous phase of the HI section of the iodine sulphur thermochemical cycle by modeling and inversion of FTIR spectra, Int. J. Hydrogen Energy, 34, 162-168, 2009
Jean-Michel Hartmann, Ha Tran, G. C. Toon, Influence of line mixing of the retrievals of atmospheric CO2 from spectra in the 1.6 and 2.1 µm regions, Atmos. Chem. Phys., 9, 7303-7312, 2009
Laraia A., R.R. Gamache, Jean-Michel Hartmann, Agnes Perrin, L. Gomez-Martin, Theoretical calculations of N2-broadened half-widths of n5 transitions of HNO3, J. Quant. Spectrosc. Radiat. Transf., 110, 687, 699, 2009
Ha Tran, Jean-Michel Hartmann, An isolated line-shape model based on the Keilson and Storer velocity-memory function. I. Theoretical approaches, J. Chem. Phys, 130, 094301, 2009
Ha Tran, Jean-Michel Hartmann, F. Chaussard and M. Gupta, An isolated line-shape model based on the Keilson-Storer function for velocity changes. II. Molecular Dynamics Simulations and the Q(1) lines for pure H2, J. Chem. Phys, 131, 154303, 2009
Ha Tran, G. Brizzi, L. Gomez-Martin, Agnes Perrin, F. Hase, M. Ridolfi, Jean-Michel Hartmann, Validation of HNO3 spectroscopic parameters using atmospheric absorption and emission measurements, J. Quant. Spectrosc. RadiatTransf., 110, 109-117, 2009
Vangvichith M., Ha Tran, Jean-Michel Hartmann, Line-mixing and collisions induced absorption for O2-CO2 mixtures in the oxygen A band region, J. Quant. Spectrosc. Radiat. Transf., 110, 2212-2216, 2009
Ha Tran, Jean-Michel Hartmann, An improved O2 A-band absorption model and its consequences for retrievals of photon paths and surface pressures, J. Geophys. Res., 113, doi:10.1029/2007JD009284, 2008
Ha Tran, D. Bermejo, J.L. Domenech, P. Joubert, R.R. Gamache, Jean-Michel Hartmann, Collisional parameters of H2O lines: velocity effects on the line-shape, J. Quant. Spectrosc. Radiat. Transf., 108, 126-145, 2007
Cacciani P., J. Cosléou, F. Herlemont, M. Khelkahal, C. Boulet, Jean-Michel Hartmann, The role of relaxation in the nuclear spin conversion process, J. Mol. Struct., 780-781, 277-282, 2006
Jean-Marie Flaud, J. Orphal, C. Boulet, Jean-Michel Hartmann, Measurement and analysis of collisional line-mixing within the hyperfine components of helium-broadened HI lines, J. Mol. Spectrosc., 235, 157-165, 2006
Ha Tran, C. Boulet, Jean-Michel Hartmann, Line-mixing and collision induced absorption by oxygen in the A-band. Laboratory measurements, model, and tools for atmospheric spectra computations, J. Geophys. Res., 111, 6869-6882, 2006
Ha Tran, Jean-Marie Flaud, T. Fouchet, T. Gabard, Jean-Michel Hartmann, Model, software, and database for line-mixing effects in the n3 and n4 bands of CH4 and tests using laboratory and planetary measurements. H2 (and He) broadening and the atmospheres of Jupiter and Saturn, J. Quant. Spectrosc. Radiat. Tranf., 101, 306-324, 2006
Ha Tran, Jean-Marie Flaud, T. Gabard, F. Hase, T. Von Clarmann, C. Camy-Peyret, S. Payan, Jean-Michel Hartmann, Model, software, and database for line-mixing effects in the n 3 and n4 bands of CH4 and tests using laboratory and planetary measurements. I. N2 (and air) broadenings and the Earth atmosphere, J. Quant. Spectrosc. Radiat. Tranf., 101, 284-305, 2006
Dhib M., M. A. Echargui, C. Boulet, H. Aroui, Jean-Michel Hartmann, J. Orphal, Line shift and mixing in the n4 band of NH3 perturbed by H2 and Ar, J. Mol. Spectros, 233, 138-148, 2005
Jean-Marie Flaud, Jean-Michel Hartmann, Forward of the special issue Molecular spectroscopy and planetary atmospheres, C. R. Phys. Acad. Sci., 6, 815-816, 2005
Jean-Michel Hartmann, J.P. Bouanich, C. Boulet, M.O. Bulanin, A.V. Domanskaya and K. Kerl, Self-broadening and shifting of HI lines in the 1-0 and 2-0 infrared bands, J. Quant. Spectrosc. Radiat. Transf., 95, 151-163, 2005
Niro F., C. Boulet, Jean-Michel Hartmann, The effect of line-mixing in CO2 near 15 µm on the emission of Mars atmosphere, J. Quant. Spectrosc. Radiat. Transf., 95, 483-487, 2005
Niro F., K.W. Jucks , Jean-Michel Hartmann, Spectra calculations in central and wing regions of CO2 IR bands between 10 and 20 µm. IV: Software and database for the computation of atmospheric spectra, J. Quant. Spectrosc. Radiat. Transf., 95, 469-481, 2005
Niro F., F. Hase, C. Camy-Peyret, S. Payan, Jean-Michel Hartmann, Spectra calculations in central and wing regions of CO2 IR bands between 10 and 20 µm. II: Atmospheric solar occultation spectra, J. Quant. Spectrosc. Radiat. Transf., 90, 43-59, 2005
Niro F., T. Von Clarmann, K.W. Jucks, Jean-Michel Hartmann, Spectra calculations in central and wing regions of CO2 IR bands between 10 and 20 µm. III: Atmospheric emission spectra, J. Quant. Spectrosc. Radiat. Transf., 90, 61-76, 2005
Rothman L.S., D. Jacquemart, A. Barbe, D. Chris Benner, M. Birk, L.R. Brown, M.R. Carleer, C. Chackerian Jr., K. Chance, Laurent Coudert, V. Dana, V.M. Devi, Jean-Marie Flaud, R.R. Gamache, A. Goldman, Jean-Michel Hartmann, K.W. Jucks, A.G. Maki, J.-Y. Mandin, S.T. Massie, J. Orphal, Agnes Perrin, C.P. Rinsland, M.A.H. Smith, J. Tennyson, R.N. Tolchenov, R.A. Toth, J. Vander Auwera, P. Varanasi and G. Wagner, The HITRAN 2004 molecular spectroscopic database, J. Quant. Spectrosc. Radiat. Transf., 96, 139-204, 2005
Tipping R.H., Q. Ma, C. Boulet , Jean-Michel Hartmann, Theoretical analysis of the collision-induced electronic absorptions in O2-N2 and O2-CO2 pairs, J. Mol. Structure, 742, 83-86, 2005
Wagner G., M. Birk, R.R Gamache, Jean-Michel Hartmann, Collisional parameters of H2O lines: effect of temperature, J. Quant. Spectrosc. Radiat. Transf., 92, 211-230, 2005