Experiment and computation: a combined approach to study the van der Waals complexes
Institute for Spectroscopy RAS, 108840, Troitsk, Moscow, Russia
* Corresponding author: firstname.lastname@example.org
Published online: 13 December 2016
A review of recent results on the millimetre-wave spectroscopy of weakly bound van der Waals complexes, mostly those which contain H2 and He, is presented. In our work, we compared the experimental spectra to the theoretical bound state results, thus providing a critical test of the quality of the M–H2 and M–He potential energy surfaces (PESs) which are a key issue for reliable computations of the collisional excitation and de-excitation of molecules (M = CO, NH3, H2O) in the dense interstellar medium. The intermolecular interactions with He and H2 play also an important role for high resolution spectroscopy of helium or para-hydrogen clusters doped by a probe molecule (CO, HCN). Such experiments are directed on the detection of superfluid response of molecular rotation in the He and p-H2 clusters.
© The Authors, published by EDP Sciences, 2017
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