Spatial separation of pyrrole and pyrrole-water clusters

Chemical physics letters 721, 149 - 152 (2019). doi:10.1016/j.cplett.2019.01.052
We demonstrate the spatial separation of pyrrole and pyrrole(H$_2$O) clusters from the other atomic and molecular species in a supersonically-expanded beam of pyrrole and traces of water seeded in high-pressure helium gas. The experimental results are quantitatively supported by simulations. The obtained pyrrole(H$_2$O) cluster beam has a purity of ∼ 100 %. The extracted rotational temperature of pyrrole and pyrrole(H$_2$O) from the original supersonic expansion is $T_{rot}=$ 0.8 ± 0.2 K, whereas the temperature of the deflected, pure-pyrrole(H$_2$O) part of the molecular beam corresponds to $T_{rot}≈$ 0.4 K.
Published by Elsevier, Amsterdam [u.a.]