학술논문
Fragmentation pathways for selected electronic states of the acetylene dication
Document Type
article
Author
Osipov, Timur; Rescigno, Thomas N.; Weber, Thorsten; Miyabe, Shungo; Jahnke, T.; Alnaser, A.; Hertlein, Markus P.; Jagutzki, O.; Schmidt, L.Ph.H.; Schoffler, M.; Foucar, L.; Schossler, S.; Havermeier, T.; Odenweller, M.; Voss, S.; Feinberg, Ben; Landers, Alan; Prior, Michael H.; Dorner, Reinhart; Cocke, C.L.; Belkacem, Ali
Source
Subject
Language
Abstract
Coincident measurement of the Auger electron and fragment ion momenta emitted after carbon core-level photoionization of acetylene has yielded new understanding of how the dication fragments. Ab initio calculations and experimental data, including body-frame Auger angular distributions, are used to identify the parent electronic states and together yield a comprehensive map of the dissociation pathways which include surface crossings and barriers to direct dissociation. The Auger angular distributions show evidence of core-hole localization.