A laboratory study of astronomically relevant large polycyclic aromatic hydrocar...
A laboratory study of astronomically relevant large polycyclic aromatic hydrocarbons GRAND PAHs
The research objective of this proposal is to use complimentary laboratory techniques to study the photo-ionization and photo-dissociation of large (>50 C-atoms) polycyclic aromatic hydrocarbon (PAH) molecules. These molecules are...
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Información proyecto GRAND-PAHs
Duración del proyecto: 28 meses
Fecha Inicio: 2019-04-10
Fecha Fin: 2021-08-31
Líder del proyecto
UNIVERSITEIT LEIDEN
No se ha especificado una descripción o un objeto social para esta compañía.
TRL
4-5
Presupuesto del proyecto
176K€
Fecha límite de participación
Sin fecha límite de participación.
Descripción del proyecto
The research objective of this proposal is to use complimentary laboratory techniques to study the photo-ionization and photo-dissociation of large (>50 C-atoms) polycyclic aromatic hydrocarbon (PAH) molecules. These molecules are omnipresent in the interstellar medium (ISM) where they are irradiated and electronically excited by ultraviolet photons. This excitation causes PAHs to ionize and/or fragment, contributing substantially to the molecular complexity in space. The underlying chemical pathways are largely unexplored and recent studies show that PAHs play a key role in the formation of i) smaller organic species along a top-down scenario, ii) fullerenes and carbon cages and iii) graphene flakes, i.e., bare PAH skeletons that have not been observed in the ISM yet. These molecules will be studied with a rather unique, fully operational and mobile 'instrument for Photodynamics of PAHs' (i-POP) that is capable of studying the fragmentation of mass selected PAH cations. The mobility of i-POP allows its implementation at different light sources, which include Synchrotron SOLEIL (Saint Aubin - FR) and the free electron laser laboratory FELIX (Nijmegen - NL). The project is timely as its results will actively contribute to European excellence by producing laboratory data relevant to data interpretation from international multi-billion Euro research facilities such as The Atacama Large Millimeter/submillimeter Array (ALMA) and the James Webb Space Telescope (JWST). The training objective is aligned along this research program. The existing expertise in physical chemistry will be extended to the emerging field of astrochemistry and unique knowledge will be obtained through research projects at Synchrotron SOLEIL and FELIX. A secondment is planned in the first year at FELIX to expand my experimental portfolio to include varied irradiation techniques including a free electron laser, to obtain complementary information about astronomically relevant chemical species.