Bound-free and bound-bound spectroscopy of cold trapped molecular ions
Wester, Roland
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https://hdl.handle.net/2142/91247
Description
Title
Bound-free and bound-bound spectroscopy of cold trapped molecular ions
Author(s)
Wester, Roland
Issue Date
2016-06-21
Keyword(s)
Spectroscopy in Traps
Abstract
Cryogenic radiofrequency ion traps have become a versatile tool to study the spectroscopy and state-selected collision dynamics of molecular ions. Different types of action spectroscopy have been developed to obtain a precise and sensitive spectroscopic signature. In this talk I will give an introduction to molecular ion spectroscopy in multipole traps. Then I will present recent experimental and theoretical investigations from our group on photodetachment spectroscopy and state-selected collisions of cold OH$^{-}$ anions colliding with helium and hydrogen. Based on these results we performed high resolution terahertz spectroscopy on the two lowest rotational transitions of OD$^{-}$. Work is in progress to extend the rotational spectroscopy to polyatomic molecular anions.
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