Photoionization and Photoelectron Spectroscopy of Reactive Species

Photoionization and Photoelectron Spectroscopy of Reactive Species as Tools in Laboratory Astrochemistry

Author(s): Ingo Fischer

Publication: Bunsen-Magazin 2024, 4, 84-88

Publisher: Deutsche Bunsen-Gesellschaft für physikalische Chemie e.V., Frankfurt

Language: English

DOI: 10.26125/4zk0-9y24

Abstract: In this article, we present three examples for the contribution of photoionization and photoelectron spectroscopy to laboratory astrochemistry. We focus on reactive molecules that are unstable under ambient conditions, but relevant in space. First, high resolution photoelectron spectra yield spectroscopic constants that help to identify molecular ions that cannot be observed by microwave spectroscopy. Second, ionization cross sections determined in the laboratory are required to model the amount of ions in interstellar space. Finally, investigations of photodissociation and dissociative photoionization of reactive species are necessary to unravel the chemistry in the so-called photon-dominated regions in space. These examples highlight the relevance of photoionization experiments for astrochemistry

Cite this:  I. Fischer, Bunsen-Magazin 2024, 4, 84-88, DOI: 10.26125/4zk0-9y24

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