Multiphoton ionization and dissociation of polycyclic aromatic hydrocarbon molecules of astrophysical interest.

Chacko, Roby and Barik, S and Banhatti, S and Aravind, G (2022) Multiphoton ionization and dissociation of polycyclic aromatic hydrocarbon molecules of astrophysical interest. [Publications (Pre-joining)]

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Abstract

The photoprocessing of astrophysically relevant small polycyclic aromatic hydrocarbon (PAH) molecules, namely, anthracene, phenanthrene, and pentacene, under intense UV field is experimentally studied to explore the formation of smaller ions upon their dissociative ionization and the effect of their size and structure on the dynamics of dissociative ionization. The molecules are UV processed in the multiphoton regime using a 266-nm nanosecond laser pulse. The dissociative ionization spectra at different laser intensities reveal distinct dissociation dynamics of these PAHs based on their size and structures.

Item Type:	Publications (Pre-joining)
Authors:	Chacko, Roby and Barik, S and Banhatti, S and Aravind, G
Document Language:	Language English
Uncontrolled Keywords:	Atomic & molecular collisions, Atomic & molecular processes in external fields, Electronic excitation & ionization, Laser applications, Laser spectroscopy, Light-matter interaction, Molecular spectra, Multiphoton or tunneling ionization & excitation, Optical, UV, & IR astronomy, Photodetachment, Photodissociation, Single- and few-photon ionization & excitation, Strong field ionization & excitation, Strong-field-induced spectra
Subjects:	Natural Sciences Natural Sciences > Astronomy & allied sciences
Divisions:	Azim Premji University - Bengaluru > School of Arts and Sciences
Full Text Status:	None
URI:	http://publications.azimpremjiuniversity.edu.in/id/eprint/6554
Publisher URL:	https://journals.aps.org/pra/

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