Collage by C. M. Lindsay; H₃⁺ laboratory spectrum from A. R. W. McKellar; Jupiter H₃⁺ emission image from J. E. P. Connerney.

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February 9-11, 2012

Royal Society Discussion Meeting (Feb 9-10)

and a Satellite Meeting (Feb 11)

Chemistry, Astronomy, and Physics of H₃⁺

Organized by T. Oka, M. Larsson, S. Miller, and S. Schelmmer

(B. J. McCall, Secretary)

Thursday 9 February 2012

9.00	Jonathan Tennyson University College London, UK Welcome from Royal Society
9.15	Takeshi Oka University of Chicago, USA Introductory Remarks Talk (PDF)
Session 1: Theory and Spectroscopy
Chair	Ralph Jaquet University Siegen, Germany
9.30	Ludwik Adamowicz University of Arizona, USA Progress in calculating the potential energy surface of H3+ Talk (PPTX)
10.00	Discussion
10.15	Oleg Polyansky Russian Academy of Science, Russia Spectroscopy of H3+ based on a new high accuracy global PES and DMS Talk (PPTX)
10.45	Discussion
11.00	Coffee
11.30	Annemieke Petrignani Leiden Observatory, Netherlands Visible transitions from ground-state H3+ and their Einstein B coefficients measured with high-sensitivity action spectroscopy Talk (PPT)
12.00	Discussion
Session 2: Chemistry
Chair	Dieter Gerlich Technische Universitat Chemnitz, Germany
13.30	Stephan Schlemmer University of Cologne, Germany Cold trap experiments on the H3+ + O2 proton transfer Talk (PDF)
14.00	Discussion
14.15	Ben McCall University of Illinois at Urbana-Champaign The ortho/para ratio of H3+ in laboratory and astrophysical plasmas Talk (PDF)
14.45	Discussion
15.00	Tea
Session 3: Dissociative Recombination
Chair	Chris Greene Univerity of Colorado at Boulder, USA
15.30	Christian Jungen University of Paris South, France The Jahn-Teller effect in the 3pe' Ryderg state of H3: Review of experimental and ab initio studies Talk (PPT)
16.00	Discussion
16.15	Holger Kreckel Max Planck Institute for Nuclear Physics, Germany Storage ring measurements of the dissociative recombination of H3+ Talk (PDF)
16.45	Discussion
17.00	Mats Larsson University of Stockholm, Sweden Dissociative recombination of H3+ ten years in retrospect Talk (PPTX)
17.30	Discussion
17.45	Close
JJ Thomson H3+ Centennial Dinner
	Helge Kragh Aarhus University, Denmark A controversial molecule: the early history of H3 and H3+ Talk (PDF)

Friday 10 February 2012

Session 4: Cosmic rays
Chair	William Klemperer Harvard University, USA
9.15	John Black Chalmers University of Technology, Sweden H3+ at the interface between astrochemistry and astro-particle physics Talk (PDF)
9.45	Discussion
10.00	Nick Indriolo Johns Hopkins University, USA The distribution of cosmic-ray ionization rates in diffuse molecular clouds as probed by H3+ Talk (PPTX)
10.30	Discussion
10.45	Coffee
Session 5: Galactic Center
Chair	Evelyne Roueff Observatoire de Paris, France
11.00	Tom Geballe Gemini Observatory, USA Exploring the Central Molecular Zone of the Galaxy using spectroscopy of H3+ and CO Talk (PDF)
11.30	Discussion
11.45	Darek Lis California Institute of Technology, USA Hot metastable hydronium ion (H3O+) in the Galactic Center Talk (PDF) Preprint (PDF)
12.15	Discussion
12.30	Lunch
Session 6: Interstellar Chemistry
Chair	Tom Millar Queen's University Belfast, Northern Ireland
14.00	Maryvonne Gerin LERMA, Observatoire de Paris, ENS, and CNRS, France Hydride spectroscopy of the diffuse interstellar medium: new clues on the fraction of molecular gas and cosmic ray ionization rate in relation with H3+ Talk (PPT)
14.30	Discussion
14.45	Floris van der Tak SRON, Netherlands Using observations of deuterated H3+ and other molecular ions to understand the formation of stars and planets Talk (PDF)
15.15	Discussion
15.30	Tea
16.00	Laurent Pagani Observatoire de Paris & CNRS, France H2, H3+ and the age of dark clouds and prestellar cores Talk (PDF)
16.30	Discussion
Session 7: Planetary ionospheres
Chair	Steven Miller University College London, UK
16.45	Tom Stallard University of Leicester, UK H3+ in Gas Giant ionospheres Talk (PPT)
17.15	Discussion
17.30	Jonathan Tennyson University College London, UK Closing remarks Talk (PPT)
18.00	Close

Saturday 11 February 2012 (Satellite Meeting)

Session 1: Theory
Chair	Alex Alijah University of Reims, France
9.00	Ralph Jaquet University of Siegen, Germany Non-adiabatic calculations for rovibrational states of H2, H2+, and H3+ Talk (PDF)
9.25	Rita Prosmiti CSIC, Spain A theoretical spectral survey of H5+ and isotopologs Talk (PDF)
Session 2: Spectroscopy
Chair	Takayoshi Amano University of Waterloo, Canada
9.55	Jow-Tsong Shy National Tsing Hua University, Taiwan Observation of the Infrared Saturation spectrum of H3+ Talk (PDF)
10.20	Viatcheslav Kokoouline University of Central Florida, USA The H3- molecular ion as probe for H- in the interstellar medium? Talk (PDF)
10.45	Coffee and Tea
Session 3: Chemistry
Chair	Ben McCall University of Illinois at Urbana-Champaign, USA
11.15	Radek Plasil Charles University Prague, Czech Republic Binary and ternary association of H+ + H2 Talk (PDF)
11.40	Francoise Pauzat and Yves Ellinger Universite Pierre et Marie Curie, France and Olivier Mousis Besancon Observatory, France H3+ versus H2O: Competition for the trapping of noble gases and Implication for the outer solar system Talk (PPT)
12.15	Lunch
Session 4: Recombination
Chair	Andreas Wolf Max-Planck Institute for Nuclear Physics, Germany
13.30	Juraj Glosik Charles University Prague, Czech Republic State selective recombination of H3+ Talk (PDF)
13.55	Rainer Johnsen University of Pittsburgh, USA Kinetic processes in recombining H3+ plasmas Talk (PDF) Preprint (PDF)
14.20	Rich Thomas Stockholm University, Sweden DESIREE: A unique cryogenic electrostatic storage ring for merged ion-beams studies Talk (PPT)
14.45	Coffee and Tea
Session 5: Astronomy
Chair	Takeshi Oka University of Chicago, USA
15.15	Peter Schilke University of Cologne, Germany Comparison of velocity profiles of light hydrides in the Galactic Center region Talk (PDF)
15.40	Miwa Goto Max-Planck Institute for Astronomy, Germany Looking at the Galactic center in the light of near-infrared spectroscopy of H3+ and CO Talk (PDF)
16.15	Rowin Meijerink Kapteyn Astronomical Institute, Netherlands H3+ in high redshift AGN Talk (PPTX)
17.05	Takeshi Oka University of Chicago, USA Closing Remarks Talk (PDF)

Poster Session

ESR investigation of H₄⁺ isolated in rare gas matrices, M. Correnti

Observation of the infrared saturation spectrum of H₃⁺, J.-T. Shy

H₆⁺ chemistry in solid parahydrogen, J. Kumagai, Y. Shimizu, and T. Kumada

Kinetic Processes in Recombining H₃⁺ Plasmas, R. Johnsen
PDF

High accuracy calculations of the HeH₂⁺ reactive system: from the potential energy surface to the quantum reaction dynamics, D. De Fazio, S. Cavalli, V. Aquilanti, L. Velilla, M. de Castro, A. Aguado, and M. Paniagua

Dissociative recombination of H₃O⁺ and CH₃⁺ ions at low energies, N. Douguet, A. E. Orel, C. H. Greene, and V. Kokoouline
PDF

Breaking a tetrahedral molecular ion with electrons: Study of NH₄⁺, N. Douguet, V. Kokoouline, A. E. Orel
PDF

Recombination of D₃⁺ ions with electrons, an application of absorption spectroscopy at 77-150 K, P. Dohnal, M. Hejduk, P. Rubovic, J. Varju, S. Opanasiuk, R. Plasil, J. Glosik
PDF

Quantum dynamics study of the H₅⁺ cluster: full dimensional benchmark results on its vibrational states, A. Valdes, R. Prosmiti, G. Delgado-Barrio
PDF

Full-dimensional (15-dimensional) ab initio analytical potential energy surface for the H₇⁺ cluster, P. Barragan, R. Prosmiti, Y. Wang, J. M. Bowman
PDF

Dalitz plots of 2s-vibrational states in H₃ and D₃: experiment and theory, P. Fechner, K. Mozer, H. Helm
PDF

Electric field induced predissociation of high Rydberg-states in H₃ and D₃, K. Mozer, P. Fechner, H. Helm
PDF