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Title:Frequency comb assisted ir measurements of H3+, H2D+ and D2H+ transitions
Author(s):Jusko, Pavol
Contributor(s):Schlemmer, Stephan; Asvany, Oskar
Subject(s):Spectroscopy in Traps
Abstract:We present recent measurements of the fundamental transitions of H$_3^+$, H$_2$D$^+$ and D$_2$H$^+$ in a 4~K 22-pole trap by action spectroscopic techniques. Either Laser Induced Inhibition of Cluster Growth (He attachment at T$\approx$4~K), endothermic reaction of H$_3^+$ with O$_2$, or deuterium exchange has been used as measurement scheme. We used a 3 $\mu$m optical parametric oscillator coupled to a frequency comb\footnote{ O. Asvany, J. Krieg, S. Schlemmer, {\it Rev. Sci. Instr.} 83 (2012) 093110} in order to achieve accuracy generally below 1 MHz. Five transitions of H$_3^+$, eleven of H$_2$D$^+$ and ten of D$_2$H$^+$ were recorder in our spectral range. We compare our H$_3^+$ results with two previous frequency comb assisted works\footnote{ J.N. Hodges, A.J. Perry, P.A. Jenkins, B.M. Siller, B.J. McCall, {\it J. Chem. Phys.} 139 (2013) 164201}\footnote{ H.-C. Chen, C.-Y. Hsiao, J.-L. Peng, T. Amano, J.-T. Shy, {\it Phys. Rev. Lett.} 109 (2012) 263002}. Moreover, accurate determination of the frequency allows us to predict pure rotational transitions for H$_2$D$^+$ and D$_2$H$^+$ in the THz range.
Issue Date:2016-06-22
Publisher:International Symposium on Molecular Spectroscopy
Genre:Conference Paper/Presentation
Rights Information:Copyright 2016 by the authors
Date Available in IDEALS:2016-08-22

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