Photoelectron velocity map imaging spectroscopy of BeS−

Theis, Mallory

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https://hdl.handle.net/2142/96999 Copy

Description

Title

Photoelectron velocity map imaging spectroscopy of BeS−

Author(s)

Theis, Mallory

Contributor(s)

• Heaven, Michael
• Mascaritolo, Kyle
• Dermer, Amanda Reed

Issue Date

2017-06-19

Keyword(s)

Comparing theory and experiment

Abstract

The BeS$^{-}$ anion to neutral ground state transition, $mathrm{X ^{2}Sigma^{+} rightarrow X ^{1}Sigma^{+}}$ has been studied using photoelectron velocity map imaging spectroscopy. Rotational constants, vibrational intervals and the electron binding energy of BeS$^{-}$ have been determined for the first time. Rotational constants were derived from band contour analyses, as the contours exhibited band head features associated with changes in the rotational angular momenta of $Delta$N=0, $pm$1, and $pm$2. A dipole bound state (DBS) of BeS$^{-}$ was observed 130 wn below the detachment threshold. Autodetachment spectra for the transition to the DBS were rotationally resolved, providing an accurate rotational constant for BeS$^{-}$, v=0. The experimental results were found to be in reasonable agreement with the predictions of high level ab initio calculations.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/96999

DOI

https://doi.org/10.15278/isms.2017.MI11

Copyright and License Information

Copyright 2017 Mallory Theis

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