Rotational excitation of H$_3$O$^+$ cations by para-H$_2$: improved collisional data at low temperatures

  title={Rotational excitation of H\$\_3\$O\$^+\$ cations by para-H\$\_2\$: improved collisional data at low temperatures},
  author={S{\'a}ndor Demes and F. Lique and Alexandre Faure and Floris van der Tak and C Rist and Pierre Hily-Blant},
The hydronium cation plays a crucial role in interstellar oxygen and water chemistry. While its spectroscopy was extensively investigated earlier, the collisional excitation of H3O+ is not well studied yet. In this work we present state-to-state collisional data for rotational de-excitation of both orthoand para-H3O+ due to paraH2 impact. The cross sections are calculated within the close-coupling formalism using our recent, highly accurate rigid-rotor potential energy surface for this… 

Figures and Tables from this paper


Gas-Phase Chemistry in Space
Rotational excitation of H3O+ cations by para−H2
  • J. Quant. Spectrosc. Radiat. Transf.,
  • 2010