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Title:The Zeeman Effect In Co+ Observed With Rotational Action Spectroscopy
Author(s):Marimuthu, Aravindh Nivas
Contributor(s):Brünken, Sandra; Redlich, Britta; Steenbakkers, Kim
Subject(s):Action spectroscopy (incl. PE, PD, PI, LIR)
Abstract:\begin{wrapfigure}{r}{0.5\textwidth} \begin{center} \includegraphics[width=0.48\textwidth]{CO+_117.eps} \end{center} \end{wrapfigure} The fine-structure components of the $N=0\rightarrow 1$ and $N=1 \rightarrow 2$ transitions of CO$^+$ ($^2\Sigma^+$) have been measured using the action spectroscopic technique ROSAA (Rotational State-dependent Attachment of rare gas Atoms) [1,2] in a cryogenic 22-pole ion trap. The recorded high-resolution spectra show resolved Zeeman splittings caused by the Earth's magnetic field, which are analyzed with an effective Hamiltonian approach. The ROSAA signal intensity of rotational transitions depends intrinsically on a difference in the ternary attachment rate of helium atoms to the molecular ion for the participating rotational fine-structure levels, as well as on experimental parameters such as temperature, excitation power, and helium gas pressure. Numerical simulation results of the underlying kinetics are compared to the observed CO$^+$ spectra. \\ --------------------------------------------------------\\ $[1]$ S. Brünken, L. Kluge, A. Stoffels, O. Asvany , S. Schlemmer, Astrophys. J. 783 (2014) L4.\\ $[2]$ S. Brünken, L. Kluge, A. Stoffels, J. Pérez-ríos, S. Schlemmer, JMS, 332 (2017) 67-78.
Issue Date:2021-06-24
Publisher:International Symposium on Molecular Spectroscopy
Genre:Conference Paper / Presentation
Date Available in IDEALS:2021-09-24

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