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 Title: Effects Of Multiple Argon Tagging In Alkali Metal M+h2oarn And M+d2oarn Studied By Irpd Spectroscopy Author(s): van der Linde, Christian Contributor(s): Lisy, James M.; Ke, Haochen Subject(s): Large amplitude motions, internal rotation Abstract: Metal ions play important roles in biologically processes. Among these, alkali metal ions are of great importance. Their solvation is one of the fundamental processes having great effect on their activity and has been in focus of research for many years. M$^+$H$_2$O cluster are a good model for microscopic solvation. However, modeling gas-phase cluster ions has been a challenge both experimentally and theoretically due to uncertainties in the temperature (or internal energy) of these species. The temperature depends primarily on the composition and method of preparation of the cluster ion. Infrared photodissociation spectroscopy in combination with argon tagging is a well suited tool to study these species. While argon tagging itself is a well established technique for lowering the temperature and sharpening spectral features, experiments with multiple attached Ar atoms are rare. The influence of up to three Ar atoms on cluster temperature, vibrational band origins and rotational constants will be discussed for M = Na, K, Rb and Cs. The structure, arising from rotation of the water subunit, of the asymmetric bands will be analyzed in detail. Many spectra show broadening/splitting of features and an unusual intensity distribution for features associated especially to transitions involving the $|$K$|$=1 level. The influence of a low barrier, hindering rotation of the water subunit within the cluster, will be discussed. Issue Date: 2014-06-19 Publisher: International Symposium on Molecular Spectroscopy Citation Info: van der Linde, C.; Lisy, J.M.; Ke, H. EFFECTS OF MULTIPLE ARGON TAGGING IN ALKALI METAL M+H2OArn AND M+D2OArn STUDIED BY IRPD SPECTROSCOPY. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.RJ11 Genre: CONFERENCE PAPER/PRESENTATION Type: Text Language: English URI: http://hdl.handle.net/2142/50939 DOI: https://doi.org/10.15278/isms.2014.RJ11 Rights Information: Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/ Date Available in IDEALS: 2014-09-172015-04-14
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