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Le portail des ressources scientifiques
et pédagogiques de l'AUF

M. Ousmanou MOTAPON

Université de Douala, Cameroun
omotapon (à) univ-douala.com
Région: Afrique centrale et des Grands-Lacs

Informations académiques

Statut: Enseignant-chercheur dans un établissement
Diplôme: Habilitation à diriger des recherches (HDR)
Domaine de recherche:
  • Énergie
Communautés de chercheurs:
Thèse:
(ou tout autre travail de recherche — mémoire, HDR, etc. — encadré par un universitaire)
Elargissement des Raies de Rydberg de l’Hydrogène Atomique en Astrophysique , Université de Paris-Sud XI, Orsay, France, 1996.
Directeur: N. Tran Minh et P. Jaéglé

Discipline, thèmes de recherche

Discipline: Physique
Thèmes de recherche: Processus moléculaires élémentaires, Structure et dynamique des systèmes quantiques confinés, réactivité des molécules à activité biologique, structure et collisions moléculaires
Équipe de recherche: Société Camerounaise de Physique, Société Africaine de Physique, Institute of Physics (UK)
Mots-clés: Recombinaison dissociative, atomes confinés, polarisabilité, activité antioxydante

Publications

  • N. Cherkaoui, J. Chapelle, C. de Izarra, O. Motapon, J. Picart, N. Tran Minh and O. Vallée, Recurrence relations for quantal multipole radial integrals, J. Phys II France 4, 1994, p.573 pages.

  • O. Motapon, J. Picart and N. Tran Minh, On the electronic broadening of the infrared hydrogen lines: the Paschen- case, J. Phys. B : At. Mol. Opt. Phys. 27, 1994.

  • O. Motapon, J. Picart and N. Tran Minh, Stark broadening of the hydrogen lower infrared lines, J. Phys. B : At. Mol. Opt. Phys. 27, 1994.

  • S. G. Nana Engo, L. C. Owono Owono, J. P. Dada, L. Waha Ndeuna, M. G. Kwato Njock, B. Oumarou and O. Motapon, Relativistic semiclassical description of dipole matrix elements for arbitrary transitions in non-hydrogenic ions, J. Phys. B: At. Mol. Opt. Phys. 28, 1995, p.2333 pages.

  • O. Motapon, M. G. Kwato Njock, B. Oumarou and N. Tran Minh, The global theory of spectral lineshapes applied to Hydrogen infrared lines, J. Phys. B: At. Mol. Opt. Phys. 30, 1997, p.3117 pages.

  • S. G. Nana Engo, M.G. Kwato Njock, L.C. Owono Owono, B. Oumarou, G. Lagmago Kamta, and O. Motapon, Comparison of Phenomenological and Supersymmetry-Inspired Quantum-Defect Methods in Their Relativistic and Quasirelativistic Formulations, Physical Review A56, 1997, p.2624 pages.

  • O. Motapon, Density effects on the electronic contribution to Hydrogen Ly- Stark profiles, Astronomy and Astrophysics 329, 1998, p. 792 pages.

  • O. Motapon and N. Tran Minh, Stark broadening of the lower n, n and n lines of atomic hydrogen, Astron.Astrophys.Suppl.Ser.139, 1999, p.377 pages.

  • V. Ngassam, O. Motapon, A. Florescu, L. Pichl, I.F. Schneider and A. Suzor-Weiner, Vibrational relaxation and dissociative recombination of H2+ induced by slow electrons, Phys.Rev.A68, 2003.

  • V. Ngassam, A. Florescu, L. Pichl, I.F. Schneider, O. Motapon and A. Suzor-Weiner, Evaluation of the short-range reaction matrix in MQDT treatment of dissociative recombination and related processes, Eur.Phys.J. D26, 2003.

  • A. de Kertanguy, N. Feautrier and O. Motapon , Quantum Unified Theory Applied to the of the Ly-, Ly- , and Ly- Stark electronic broadening , Astronomy and Astrophysics 432, 2005.

  • N. Vinci, N. de Ruette, F. O. Tamo Waffeu, O. Motapon, M. Fifirig , J. Tennyson, A. Suzor-Weiner and I.F. Schneider, Towards a model for the Dissociative recombination of CO2+ dication : states and couplings, J. Phys. : Conf. Ser. 4, 2005.

  • V. Ngassam, A. Orel, O. Motapon and A. Suzor-Weiner, Ab initio Study of the Dissociative recombination of Ne2+, J. Phys. : Conf. Ser. 4, 2005.

  • M. Fifirig, A. Florescu, M. C. Ströe, F. O. Waffeu Tamo, V. Ngassam , O. Motapon and I. F. Schneider, Quantum interferences of superexcited states: application to electron-molecular cation reactive collisions., Romanian Reports in Physics 57 (4), 2005.

  • O. Motapon, M. Fifirig , A. Florescu, F. O. Waffeu Tamo, O. Crumeyrolle, G. Varin-Bréant, A. Bultel, P. Vervish, J. Tennyson, A. Suzor-Weiner, and I. F. Schneider, Reactive collisions between electrons and NO+ ions: rate coefficient computations and relevance to the air plasmas kinetics., Plasmas Sources Sci. Technol. 15, 2006.

  • A. Bultel , B. G. Chéron, A. Bourdon, O. Motapon and I. F. Schneider, Collisional radiative model in air for earth re-entry problem. , Phys.Plasmas 13, 2006.

  • S. A. Ndengué and O. Motapon, Electric response of endohedrally confined hydrogen atoms, J. Phys. B : At. Mol. Opt. Phys. 41, 2008.

  • M. C. Ströe, M. Fifirig, F. O. Waffeu Tamo, O. Motapon, O. Crumeyrolle, G. Varin-Bréant, A. Bultel, P. Vervisch, A. Suzor-Weiner and I. F. Schneider, Reactive collisions between electrons and molecular cations isotopomers: cross sections and rate coefficients for HD+ and DT+., Atomic and Plasma-Material Interaction Data for Fusion 14, 2008.

  • O. Motapon, F. O. Waffeu Tamo, X. Urbain, I.F. Schneider, Decisive role of rotational couplings in dissociative recombination and superelastic collisions of H2+ with low-energy electrons., Phys.Rev.A77, 2008.

  • J.J. Fifen, M. Nsangou, Z. Dhaouadi, O. Motapon and S. Lahmar, Single or Double Hydrogen Atom Transfer in the Reaction of Metal - associated Phenolic acids with • OH Radical: DFT Study , J. Mol. Struct. (THEOCHEM) 901, 2009.

  • S. A. Ndengué and O. Motapon, Electron –electron interaction effects in heliumlike atoms confined in finite external square-well potential , Eur. Phys. J. D 55, 2009.

  • O. Novotny, O. Motapon, M. H. Berg, D. Bing, H. Buhr, H. Fadil, J. Hoffmann, A. S. Jaroshevich, B. Jordon-Thaden, C. Krantz, M. Lange, M. Lestinsky, M. Mendes, S. Novotny, A. Petrignani, D. A. Orlov, I. F. Schneider, A. E. Orel and A. Wolf , Dissociative recombination of CF+: experiment and theory, J. Phys. : Conf. Ser.192, 2009.

  • J.J. Fifen, M. Nsangou, Z. Dhaouadi, O. Motapon and N. Jaidane , Solvent effects on the antioxidant activity of 3,4-dihydroxyphenylpyruvic acid :DFT and TD-DFT studies, Comp. Theor. Chem., 2011.

  • D. Schwalm, D. Shafir, S. Novotny, H. Buhr, S. Altevogt, A. Faure, M. Grieser, A. G. Harvey, O. Heber, J. Hoffmann, H. Kreckel, L. Lammich, O. Motapon, I. Nevo, H. B. Pedersen, H. Rubinstein, I. F. Schneider, J. Tennyson, F. O. Waffeu Tamo, A. Wolf, D. Za, Rotational Cooling of HD+ by Superelastic Collisions with Electrons, J. Phys. : Conf. Ser. 300, 2011.

  • O. Motapon, D. Backodissa, F. O. Waffeu Tamo, D. Tudorache, K. Chakrabarti, J. Zs. Mezei, F. Lique, A. Bultel, L. Tchang-Brillet, O. Dulieu, J. Tennyson, A. Wolf, X. Urbain, and I. F. Schneider , Electron - molecular cation reactive collisions: from channel mixing to competitive processes, J. Phys. : Conf. Ser. 300, 2011.

  • F. O. Waffeu Tamo, H. Buhr, O. Motapon, S. Altevogt, V. M. Andrianarijaona, M. Grieser, L. Lammich, M. Lestinsky, M. Motsch, I. Nevo, S. Novotny, D. A. Orlov, H. B. Pedersen, D. Schwalm, F. Sprenger, X. Urbain, U. Weigel, A. Wolf, and I. F. , Assignment of resonances in dissociative recombination of HD+ ions: High-resolution measurements compared with accurate computations, Phys.Rev.A84,, 2011.

  • O. Motapon, S. A. Ndengué and K. D. Sen, Static and dynamic dipole polarizabilities and electron density at origin: Ground and excited states of Hydrogen atom confined in multiwalled fullerenes, Int. J. Quant. Chem. 111, 2011.

  • K. Chakrabarti, D.R. Backodissa-Kiminou, N. Pop, J. Zs. Mezei, O. Motapon, F Lique, O. Dulieu, A. Wolf and I. F. Schneider, Dissociative recombination of electrons with diatomic molecular cations above dissociation threshold: application to H2+ and of HD+, Phys. Rev.A87, 2013.

  • J. J. Fifen, M. Nsangou, Z. Dhaouadi, O. Motapon, N. Jaidane, Solvation energies of the proton in methanol, J. Chem. Theory & Computations 9, 2013.

  • J. J. Fifen, M. Nsangou, Z. Dhaouadi, O. Motapon and N. Jaidane, Structures of protonated methanol clusters and temperature effects , J. Chem. Phys. 138, 2013.

  • O. Holtomo, M. Nsangou, J. J. Fifen and O. Motapon, DFT Study Of The Solvent Effects On The Structure, UV-Vis Spectra And The Antioxidant Activity Of Caffeic Acid Phenethyl Ester And Some Of Its Derivatives, J. Chem. Chem. Eng. 7, 2013.

  • S. A. Ndengué, O. Motapon, R. L. Melingui Melono and A. J. Etindélé, Electronic structure of cylindrically confined hydrogen atom by B-splines methods : Application to its dipole polarizability, J. Phys. B : At. Mol. Opt. Phys. 47, 2014.

  • S. Ndengué, S. Madronich, F. Gatti, H.-D. Meyer, O. Motapon and R. Jost , Ozone Photolysis: strong isotopologue/isotopomer selectivity in the stratosphere, J. Geophys. Res. Atmos., 119 (7), 2014.

  • O. Motapon, N. Pop, F. Argoubi, J. Zs. Mezei, M.D. Epee Epee, A. Faure, M. Telmini, J. Tennyson and I. F. Schneider, Rotational transitions induced by collisions of HD+ with low energy electrons , Phys.Rev. A 90, 2014.

  • M. Tchatchouang, M. Nsangou and O. Motapon , Stability, metastability and spectroscopic constants of electronic states of NH- and CH-, Molecular Physics, 2014.

  • O. Holtomo, M. Nsangou, J.J. Fifen, O. Motapon, DFT study of the Solvent Effect on the H-atom transfer involved in the scavenging process of free radicals .HO2 and .O2- by caffeic acid phenethyl ester and some of its derivatives, J. Mol. Model., 2014.

  • O. Motapon, S. Niyonzima, K. Chakrabarti, J. Zs. Mezei, D. Backodissa, S. Ilie, M.D. Epee Epee, B. Peres, M. Lanza, T. Tchakoua, N. Pop, F. Argoubi, M. Telmini, O. Dulieu, A. Bultel, J. Robert, Å. Larson, A.E. Orel, and I.F. Schneider, Advances in the MQDT approach of electron/molecular cation reactive collisions: High precision extensive calculations for applications, EPJ Web of Conf., 2015.

  • A. Wolf, O. Novotny, H. Buhr, C. Krantz, I. F. Schneider, O. Motapon, and J. Zs. Mezei, The HD+ dissociative recombination rate coefficient at low temperature, EPJ Web of Conf., 2015.

  • S. A. Ndengué and O. Motapon, Spatial and shell-confined one electron atomic and molecular systems: Structure and dipole polarizability , in K. D. Sen, Ed. « Quantum Confined Electronic Structure of Atoms and Molecules », 2014, Springer, Heidelberg, pp 169-204 pages.

Divers

Date de la dernière modification: 19 mai 2015