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Your search keyword '"Smith, I. W. M."' showing total 7 results
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7 results on '"Smith, I. W. M."'

1. Review of important reactions for the nitrogen chemistry in the interstellar medium

Author

Wakelam, V., Smith, I. W. M., Loison, J. -C., Talbi, D., Klippenstein, S. J., Bergeat, A., Geppert, W. D., and Hickson, K. M.

Subjects
Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, Nuclear Experiment, Astrophysics - Astrophysics of Galaxies
Abstract

Predictions of astrochemical models depend strongly on the reaction rate coefficients used in the simulations. We reviewed a number of key reactions for the chemistry of nitrogen-bearing species in the dense interstellar medium and proposed new reaction rate coefficients for those reactions. The details of the reviews are given in the form of a datasheet associated with each reaction. The new recommended rate coefficients are given with an uncertainty and a temperature range of validity and will be included in KIDA (http://kida.obs.u-bordeaux1.fr)., 39 pages, not published in refereed journal, datasheets are given in KIDA

Published
2013

2. A KInetic Database for Astrochemistry (KIDA)

Author

Wakelam, V., Herbst, E., Loison, J.-C., Smith, I. W. M., Chandrasekaran, V., Pavone, B., Adams, N. G., Bacchus-Montabonel, M.-C., Bergeat, A., Bxe9roff, K., and 24 coauthors, and 24 coauthors

Published
2012

3. Kinetics of formation and thermodynamics of the elusive HOOO radical

Author

Le Picard, Sébastien D., Tizniti, Meryem, Canosa, André, Sims, Ian R, Smith, I. W. M., Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), and Brébion, Alice

Subjects
[PHYS]Physics [physics], Molecular physics, ComputingMilieux_MISCELLANEOUS, [PHYS] Physics [physics]
Abstract

International audience

Published
2010

4. Direct measurement of the binding energy of the weakly bound HO3 radical cluster

Author

Sims, Ian R, Canosa, André, Le Picard, Sébastien D., Tizniti, Meryem, Smith, I. W. M., Institut de Physique de Rennes (IPR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), and Brébion, Alice

Subjects
[PHYS]Physics [physics], Molecular physics, [PHYS] Physics [physics]
Published
2010

5. Polycyclic aromatic hydrocarbons, carbon nanoparticles and the diffuse interstellar bands - Discussion

Author

Sarre, P., Crovisier, Kaiser, R. I., Chakrabarti, S., Richards, A. M. S., van Dishoeck, E. F., Herbst, E., Rowe, B. R., Semenov, D. A., Owen, T. C., Balucani, Nadia, Minard, R. D., Ehrenfreund, P., Kallenbach, R., Matthews, C., Smith, I. W. M., Sims, I. R., Mitchell, J. B. A., Wickham, A. J., de Bergh, C. M., Lintott, C. J., Dalgarno, A., Le Picard, S., Berteloite, C., Canosa, A., Black, J. H., Pino, T., Duley, W. W., Brechignac, P., Cox, N. L. J., Biennier, L., and Linnartz, H.

Subjects
astrochimica
Published
2006

6. Rotational energy transfer in collisions between CO(X singlet sigma plus, v=2, J=0, 1,4, and 6) and He at temperatures from 294 to 15 K

Author

Carty, D., Goodard, A., Sims, I. R., and Smith, I. W. M.

Abstract

Infrared-vacuum ultraviolet double resonance experiments have been implemented in the ultracold environment provided by a Cinétique de Réaction en Ecoulement Supersonique Uniforme apparatus. With this technique rate coefficients of two kinds have been measured for rotational energy transfer in collisions between CO and He: (a) those for total removal from the selected rotational states J = 0, 1, 4, and 6 in the vibronic state X 1+, v = 2, and (b) those for transfer between selected initial and specific final states. Using different Laval nozzles, results have been obtained at several different temperatures: 294, 149, 63, 27, and 15 K. The thermally averaged cross sections for total removal by collisions with He show only slight variations both with initial rotational state and with temperature. The variation of state-to-state rate coefficients with J show several general features: (i) a decrease with increasing J; (ii) a propensity to favor odd J over even J; and (iii) at lower temperatures, the distribution of rate coefficients against J becomes narrower, and decreases in J are increasingly favored over increases in J, a preference which is most strongly seen for higher initial values of J. The results are shown to be in remarkably good agreement with those obtained in ab initio scattering calculations by Dalgarno and co-workers [Astrophys. J. 571, 1015 (2002)].

Published
2004

7. General Discussion

Author

Ali, A., Mccoustra, M. R. S., Lambert, J. F., Acharyya, K., Visser, R., Kallenbach, R., Mautner, D., Yates, J. A., Al Halabi, A., Plane, J. M. C., Brown, W. A., Collings, M. P., Dulieu, F., Oberg, K. I., Rawlings, J. M. C., Vidali, G., Herbst, E., Palumbo, M. E., Fillion, J. H., Mason, N. J., Mitchell, J. B. A., Viti, S., Chakrabarti, S., Sims, I. R., Sabbah, H., Biennier, L., Smith, I. W. M., Minard, R. D., Goumans, T. P. M., Pilling, M. J., Faure, A., Casavecchia, Piergiorgio, Balucani, Nadia, Costes, M., Kaiser, R. I., Linnartz, H., Geppert, W. D., Semenov, D. A., Talbi, D., Loison, J. C., Quan, D. H., and Heard, D. E.

Subjects
Physical and Theoretical Chemistry, chimica del mezzo interstellare
Published
2006
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