A photoelectron-photoion-photoion coincidence technique, using an ion imaging detector and tunable synchrotron radiation in the 18.0 – 37.0 eV photon energy range, inducing the ejection of molecular valence electrons, has been applied to study the double ionization of the propylene oxide, a simple prototype chiral molecule. Energy thresholds for the formation of different ionic products, the related branching ratios, and the kinetic energy distribution of fragment ions are measured at different photon energies. The main recorded two body fragmentation channels yield C2H4+ + CH2O+, and C2H3+ + CH3+ product ions (66.70% and 18.70%, respectively). These new experimental data are relevant per se and are mandatory information for further experimental and theoretical investigations of oriented chiral molecules.
The double photoionization of propylene oxide
Stefano Falcinelli
2018
Abstract
A photoelectron-photoion-photoion coincidence technique, using an ion imaging detector and tunable synchrotron radiation in the 18.0 – 37.0 eV photon energy range, inducing the ejection of molecular valence electrons, has been applied to study the double ionization of the propylene oxide, a simple prototype chiral molecule. Energy thresholds for the formation of different ionic products, the related branching ratios, and the kinetic energy distribution of fragment ions are measured at different photon energies. The main recorded two body fragmentation channels yield C2H4+ + CH2O+, and C2H3+ + CH3+ product ions (66.70% and 18.70%, respectively). These new experimental data are relevant per se and are mandatory information for further experimental and theoretical investigations of oriented chiral molecules.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
