The Zeeman Effect In Co⁺ Observed With Rotational Action Spectroscopy

Marimuthu, Aravindh Nivas

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https://hdl.handle.net/2142/111229 Copy

Description

Title

The Zeeman Effect In Co⁺ Observed With Rotational Action Spectroscopy

Author(s)

Marimuthu, Aravindh Nivas

Contributor(s)

• Brünken, Sandra
• Redlich, Britta
• Steenbakkers, Kim

Issue Date

2021-06-24

Keyword(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.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Permalink

http://hdl.handle.net/2142/111229

DOI

10.15278/isms.2021.RM03

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