By coupling the ion imaging technique with photoelectron-ion-ion coincidence, we have studied the angle and energy distribution of the two ions formed in the double photoionization of N2O molecule. With this experimental method, each of the two dissociative channels leading to N++NO+ and O++N2+ have been investigated as a function of the photon energy. The vertical threshold for the formation of the N2O2+ dication has been found to be 35.8 eV, while the adiabatic thresholds for the N++NO+ and O++N2+ dissociative channels are, respectively, 28.8 and 30.9 eV. The anisotropy of the angular distribution of ionic fragments in the dissociative double photoionization of N2O is also reported as a function of the investigated photon energy.
Angular and energy distribution of ion products in the double photoionization of N2O molecules by linearly polarized light in the 30-50 eV range
CANDORI, Pietro;PIRANI, Fernando;FALCINELLI, Stefano;VECCHIOCATTIVI, Franco;
2007
Abstract
By coupling the ion imaging technique with photoelectron-ion-ion coincidence, we have studied the angle and energy distribution of the two ions formed in the double photoionization of N2O molecule. With this experimental method, each of the two dissociative channels leading to N++NO+ and O++N2+ have been investigated as a function of the photon energy. The vertical threshold for the formation of the N2O2+ dication has been found to be 35.8 eV, while the adiabatic thresholds for the N++NO+ and O++N2+ dissociative channels are, respectively, 28.8 and 30.9 eV. The anisotropy of the angular distribution of ionic fragments in the dissociative double photoionization of N2O is also reported as a function of the investigated photon energy.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
