R. P. Wayne, Chemistry of Atmospheres, 2000.

P. A. Cook, M. N. Ashfold, Y. Jee, K. Jung, S. Harich et al., Vacuum ultraviolet photochemistry of methane, silane and germane, Physical Chemistry Chemical Physics, vol.3, issue.10, p.1848, 2001.
DOI : 10.1039/b100248l

C. R. Brundle, M. B. Robin, and H. Basch, Electronic Energies and Electronic Structures of the Fluoromethanes, The Journal of Chemical Physics, vol.53, issue.6, p.2196, 1970.
DOI : 10.1063/1.1674313

J. W. Rabalais, T. Bergmark, L. O. Werme, L. Karlsson, and K. Siegbahn, The Jahn-Teller Effect in the Electron Spectrum of Methane, Physica Scripta, vol.3, issue.1, p.13, 1971.
DOI : 10.1088/0031-8949/3/1/004

G. Bieri and L. Asbrink, 30.4-nm He(II) photoelectron spectra of organic molecules, Journal of Electron Spectroscopy and Related Phenomena, vol.20, issue.1, p.149, 1980.
DOI : 10.1016/0368-2048(80)85013-4

K. Furuya, K. Kimura, Y. Sakai, T. Takayanagi, and N. Yonekura, state, The Journal of Chemical Physics, vol.101, issue.4, p.2720, 1994.
DOI : 10.1063/1.467653

H. J. Wörner, R. Van-der-veen, and F. Merkt, Jahn-Teller Effect in the Methane Cation: Rovibronic Structure and the Geometric Phase, Physical Review Letters, vol.97, issue.17, p.173003, 2006.
DOI : 10.1103/PhysRevLett.97.173003

H. J. Wörner, X. Qian, and F. Merkt, Jahn-Teller effect in tetrahedral symmetry: Large-amplitude tunneling motion and rovibronic structure of CH4+ and CD4+, The Journal of Chemical Physics, vol.126, issue.14, p.144305, 2007.
DOI : 10.1063/1.2712840

U. Hergenhahn, Vibrational structure in inner shell photoionization of molecules, Journal of Physics B: Atomic, Molecular and Optical Physics, vol.37, issue.12, p.89, 2004.
DOI : 10.1088/0953-4075/37/12/R01

E. Kukk, K. Ueda, U. Hergenhahn, X. Liu, G. Prümper et al., Violation of the Franck-Condon Principle due to Recoil Effects in High Energy Molecular Core-Level Photoionization, Physical Review Letters, vol.95, issue.13, p.133001, 2005.
DOI : 10.1103/PhysRevLett.95.133001

K. Ueda, A. Pavlychev, E. Kukk, U. Hergenhahn, H. Yoshida et al., Non-Franck???Condon behavior in the C 1s photoelectron spectrum of the methane molecule, Chemical Physics Letters, vol.411, issue.1-3, p.33, 2005.
DOI : 10.1016/j.cplett.2005.05.118

M. Kato, K. Kameta, T. Odagiri, N. Kouchi, and Y. Hatono, Single-hole one-electron superexcited states and doubly excited states of methane in the vacuum ultraviolet range as studied by dispersed fluorescence spectroscopy, Journal of Physics B: Atomic, Molecular and Optical Physics, vol.35, issue.21, p.4383, 2002.
DOI : 10.1088/0953-4075/35/21/305

H. Fukuzawa, T. Odagiri, T. Nakazato, M. Murata, H. Miyagi et al., Doubly excited states of methane produced by photon and electron interactions, Journal of Physics B: Atomic, Molecular and Optical Physics, vol.38, issue.5, p.565, 2005.
DOI : 10.1088/0953-4075/38/5/008

T. A. Field and J. H. Eland, The fragmentation of CH4+ ions from photoionization between 12 and 40 eV, Journal of Electron Spectroscopy and Related Phenomena, vol.73, issue.2, p.209, 1995.
DOI : 10.1016/0368-2048(94)02282-8

K. Wietzel, M. Malow, G. K. Jarvis, T. Baer, Y. Song et al., High-resolution pulsed field ionization photoelectron???photoion coincidence study of CH4: Accurate 0 K dissociation threshold for CH3+, The Journal of Chemical Physics, vol.111, issue.18, p.8267, 1999.
DOI : 10.1063/1.480169

C. J. Latimer, R. A. Mackie, A. M. Sands, K. F. Kouchi, and . Dunn, The dissociative photoionization of methane in the VUV, Journal of Physics B: Atomic, Molecular and Optical Physics, vol.32, issue.11, p.2667, 1999.
DOI : 10.1088/0953-4075/32/11/314

A. J. Heck, R. N. Zare, and D. W. Chandler, Photofragment imaging of methane, The Journal of Chemical Physics, vol.104, issue.11, p.4019, 1996.
DOI : 10.1063/1.471214

E. E. Koch and M. Skibowski, Optical absorption of gaseous methane, ethane, propane and butane and reflection of solid methane and ethane in the vacuum ultraviolet, Chemical Physics Letters, vol.9, issue.5, p.429, 1971.
DOI : 10.1016/0009-2614(71)80260-9

J. A. Samson, G. N. Haddad, T. Masuoka, P. N. Pareek, and D. A. Kilcoyne, from 110 to 950 ??, The Journal of Chemical Physics, vol.90, issue.12, p.6925, 1989.
DOI : 10.1063/1.456267

J. W. Au, G. Cooper, G. R. Burton, T. N. Olney, and C. E. Brion, The valence shell photoabsorption of the linear alkanes, CnH2n+2 (n=1???8): absolute oscillator strengths (7???220 eV), Chemical Physics, vol.173, issue.2, p.209, 1993.
DOI : 10.1016/0301-0104(93)80142-V

K. Kameta, N. Kouchi, M. Ukai, and Y. Hatano, Photoabsorption, photoionization, and neutral-dissociation cross sections of simple hydrocarbons in the vacuum ultraviolet range, Journal of Electron Spectroscopy and Related Phenomena, vol.123, issue.2-3, p.225, 2002.
DOI : 10.1016/S0368-2048(02)00022-1

A. G. Suits and J. W. Hepburn, ION PAIR DISSOCIATION: Spectroscopy and Dynamics, Annual Review of Physical Chemistry, vol.57, issue.1, p.431, 2006.
DOI : 10.1146/annurev.physchem.56.092503.141209

K. Mitsuke, H. Hattori, and H. Yoshida, Ion???pair formation from saturated hydrocarbons through photoexcitation of an inner???valence electron, The Journal of Chemical Physics, vol.99, issue.9, p.6642, 1993.
DOI : 10.1063/1.465856

C. A. Hunniford, S. W. Scully, K. F. Dunn, and C. J. Latimer, Fragment anion spectroscopy of water in the inner and outer valence regions, Journal of Physics B: Atomic, Molecular and Optical Physics, vol.40, issue.6, p.1225, 2007.
DOI : 10.1088/0953-4075/40/6/012

C. R. Howle, S. Ali, R. P. Tuckett, D. A. Shaw, and J. B. West, Characterisation of a new VUV beamline at the Daresbury SRS using a dispersed fluorescence apparatus incorporating CCD detection, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol.237, issue.3-4, p.656, 2005.
DOI : 10.1016/j.nimb.2005.03.287

M. J. Simpson, R. P. Tuckett, K. F. Dunn, C. A. Hunniford, C. J. Latimer et al., Vacuum-UV negative photoion spectroscopy of SF5CF3, The Journal of Chemical Physics, vol.128, issue.12, p.124315, 2008.
DOI : 10.1063/1.2894869

M. J. Simpson, R. P. Tuckett, K. F. Dunn, C. A. Hunniford, and C. J. Latimer, Vacuum-UV negative photoion spectroscopy of CF3Cl, CF3Br, and CF3I, The Journal of Chemical Physics, vol.130, issue.19, p.194302, 2009.
DOI : 10.1063/1.3137103

P. M. Dehmer and W. A. Chupka, ???, The Journal of Chemical Physics, vol.62, issue.11, p.4525, 1975.
DOI : 10.1063/1.430359

J. C. Traeger and R. G. Mcloughlin, Absolute heats of formation for gas-phase cations, Journal of the American Chemical Society, vol.103, issue.13, p.3647, 1981.
DOI : 10.1021/ja00403a006

A. Bodi, M. Johnson, T. Gerber, Z. Gengeliczki, B. Sztáray et al., Imaging photoelectron photoion coincidence spectroscopy with velocity focusing electron optics, Review of Scientific Instruments, vol.80, issue.3, p.34101, 2009.
DOI : 10.1063/1.3082016

J. Berkowitz, Photoabsorption, Photoionization and Photoelectron Spectroscopy, 1979.

E. F. Van-dishoeck, W. J. Van-der-hart, and M. Van-hemert, Ab initio studies of the photodissociation processes in positive hydrocarbon ions. I. The methane ion, Chemical Physics, vol.50, issue.1, p.45, 1980.
DOI : 10.1016/0301-0104(80)87024-8