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Intrinsic absorption profile and radiative cooling rate of a PAH cation revealed by action spectroscopy in the cryogenic electrostatic storage ring DESIREE

Published online by Cambridge University Press:  12 October 2020

Mark H. Stockett Open the ORCID record for Mark H. Stockett [Opens in a new window] ,
Mikael Björkhage ,
Henrik Cederquist ,
Henning T. Schmidt  and
Zettergren Henning
Mark H. Stockett
Affiliation:
Department of Physics, Stockholm University, Stockholm, Sweden email: [email protected]
Mikael Björkhage
Affiliation:
Department of Physics, Stockholm University, Stockholm, Sweden email: [email protected]
Henrik Cederquist
Affiliation:
Department of Physics, Stockholm University, Stockholm, Sweden email: [email protected]
Henning T. Schmidt
Affiliation:
Department of Physics, Stockholm University, Stockholm, Sweden email: [email protected]
Zettergren Henning
Affiliation:
Department of Physics, Stockholm University, Stockholm, Sweden email: [email protected]
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Abstract

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The multi-photon photodissociation (MPD) action spectrum of the coronene cation $$({{\rm{C}}_{24}}{\rm{H}}_{12}^ + )$$ has been measured as a function of storage time up to 60 s in the cryogenic electrostatic storage ring DESIREE. These measurements reveal not only the intrinsic absorption profile of isolated coronene cations, but also the rate at which hot-band absorptions are quenched by radiative cooling. The cooling rate is interpreted using a Simple Harmonic Cascade model of infrared vibrational emission.

Keywords

molecular datatechniques: spectroscopicISM: molecules
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S350: Laboratory Astrophysics: From Observations to Interpretation , April 2019 , pp. 127 - 131
Copyright
© International Astronomical Union 2020

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