ANGULAR-CORRELATION BETWEEN FRAGMENT IONS FROM THE NITROGEN K-SHELL EXCITED AND IONIZED N2O

A newly developed angle-resolved photoion-photoion coincidence (ARPIPI CO) measurements for the N 1s ionized and excited N2O were carried out to obtain the correlation angle dependence of the ARPIPICO rates. The results indicate that the bending motion in the N-c 1s --> pi excite d state is more strongly excited than that in the N-t 1s --> pi one, and is consistent with our calculated results that the Renner-Teller e ffect in the N-c 1s --> pi excited state is stronger than that in the N-t 1s --> pi one.