The inner-shell ionization and fragmentation of selenophene at 120 eV
Abstract
Abstract The inner-shell ionization of selenophene at 120 eV produces a rich array of fragmentation dynamics, including many originating from Auger-Meitner processes. In this report, three-dimensional velocity-map imaging and covariance analysis were used to identify and characterize over 50 distinct selenophene fragmentation channels. The majority resulted in two or three ‘heavy’ products containing selenium or carbon, many of which had identical mass-to-charge ratios but different chemical compositions due to the degree of hydrogenation and the selenium isotope involved. Covariance analysis was used to isolate these reaction channels and to provide estimates of their relative yields. In combination with prior similar studies on thiophene and furan, the current results indicate that the nature of the heteroatom significantly influences the charge redistribution and bond cleavage dynamics induced by the Auger-Meitner process, and demonstrate the sensitivity of inner-shell ionization dynamics to the molecular and electronic structures of heterocyclic systems.
Article Details
Authors (32)
Tiffany Walmsley
Felix Allum
Stanford PULSE Institute
James R. Harries
Yoshiaki Kumagai
Joseph W. McManus
Chemistry Research Laboratory, Department of Chemistry
Kiyonobu Nagaya
Mathew Britton
Mark Brouard
Chemistry Research Laboratory, Department of Chemistry
Philip H. Bucksbaum
Mizuho Fushitani
Ian Gabalski
Tatsuo Gejo
Paul Hockett
Andrew J. Howard
Hiroshi Iwayama
Edwin Kukk
Chow-shing Lam
Russell S. Minns
School of Chemistry and Chemical Engineering
Akinobu Niozu
Sekito Nishimuro
Johannes Niskanen
Shigeki Owada
Weronika O. Razmus
Daniel Rolles
James R. Macdonald Laboratory, Physics Department
James D. Somper
Chemistry Research Laboratory
Kiyoshi Ueda
James Unwin
Shin-ichi Wada
Joanne L. Woodhouse
Ruaridh Forbes
Linac Coherent Light Source
Michael Burt
Chemistry Research Laboratory, Department of Chemistry
Emily M. Warne
Chemistry Research Laboratory, Department of Chemistry