THRESHOLD PHOTODETACHMENT SPECTROSCOPY OF C₂⁻ IN A 16-POLE WIRE TRAP

Melath, Sruthi Purushu

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Description

Title

THRESHOLD PHOTODETACHMENT SPECTROSCOPY OF C₂⁻ IN A 16-POLE WIRE TRAP

Author(s)

Melath, Sruthi Purushu

Contributor(s)

• Wester, Roland
• Wild, Robert
• Nötzold, Markus
• Lochmann, Christine

Issue Date

2023-06-19

Keyword(s)

Mini-symposium: Spectroscopy with Cryogenic Ion Traps

Abstract

Photodetachment spectroscopy is a powerful spectroscopic technique for determining the internal state distribution of a molecular anion. Previously, our group studied the threshold photodetachment spectroscopy of CN⁻ at both 16 Kelvin and 295 Kelvin in a 22-pole ion trap and measured the electron affinity of CN with great precision (EA: 3.864(2) eV). The dicarbon anion, our current molecule of interest, is a well-studied system due to its stable electronic level structure and potential laser cooling transition. Here we present the threshold photodetachment spectroscopy study of C₂⁻ in a radiofrequency 16-pole ion trap at 8 Kelvin. We investigated the behavior of the cross section near the threshold for the ground state transition, C₂X¹Σ⁺g ← C₂⁻ X²Σ⁺g. We see a p-wave behavior for this ground state detachment. And we measured the electron affinity, which is consistent with the previously measured values."

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Handle URL

https://hdl.handle.net/2142/122307

DOI

https://doi.org/10.15278/isms.2023.6678

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