Influence of a new potential energy surface on the rotational (de)excitation of H$_{\mathsf 2}$O by H$_{\mathsf 2}$ at low temperature

Abstract

Aims.Using a newly determined 5D potential energy surface for H2–H2O we provide an extended and revised set of rate coefficients for de-excitation of the lowest 10 para- and 10 ortho- rotational levels of H2O by collisions with para- and ortho-H2, for kinetic temperatures from 5 K to 20 K.