Lyα Irradiation of Superhydrogenated Coronene Films: Implications for H2 Formation

We present the results of an experimental study of the interaction of Lyα photons with superhydrogenated coronene films. The effects of ultraviolet (UV) irradiation have been analyzed with infrared spectroscopy. The spectral changes provide evidence for UV photodestruction of the C-D bonds of the superhydrogenated coronene with a cross section of 8 ± 2 × 10^-20 cm². The comparison of our experimental result with the prediction from theoretical modeling suggests an extension of the region inside photodissociation regions where superhydrogenated coronene can survive and contribute to H₂ formation. H₂ formation through abstraction in superhydrogenated coronene dominates over direct H₂ loss induced by UV photodestruction.

Volume

908

Issue

1

Start page

L18

Uri

http://hdl.handle.net/20.500.12386/31657

Url

https://iopscience.iop.org/article/10.3847/2041-8213/abddb9

https://api.elsevier.com/content/abstract/scopus_id/85101410003

Issn Identifier

2041-8205

Ads BibCode

2021ApJ...908L..18M

Rights

open.access

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Lyα Irradiation of Superhydrogenated Coronene Films: Implications for H2 Formation

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