Rates for rotational excitation of HC3N by collisions with He atoms and H2 molecules are computed for kinetic temperatures in the range 5-20K and 5-100K, respectively. These rates are obtained from extensive quantum and quasi-classical calculations using new accurate potential energy surfaces (PES).
@article{arxiv.physics/0611258,
title = {Rotational Excitation of HC_3N by H_2 and He at low temperatures},
author = {Michael Wernli and Laurent Wiesenfeld and Alexandre Faure and Pierre Valiron},
journal= {arXiv preprint arXiv:physics/0611258},
year = {2009}
}