Premium
Kinetic energy distributions of the fragment ions from multiply ionized C 2 H 6 as functions of the charge state of the intermediate states
Author(s) -
Yoshida S.,
Majima T.,
Tsuchida H.,
Saito M.
Publication year - 2019
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.3084
Subject(s) - ion , fragmentation (computing) , atomic physics , ionization , kinetic energy , electron ionization , electron , electron capture , physics , molecule , nuclear physics , quantum mechanics , computer science , operating system
Here, we report the kinetic energy distributions (KEDs) of the fragment ions produced from multiply ionized ethane (C 2 H 6 ) molecules in single electron capture collisions with 1.2 MeV C 2+ . To systematically investigate the fragmentation dynamics, the KEDs were obtained as functions of the charge state of the intermediate C 2 H 6 r +* ions r transiently generated prior to fragmentation. r was determined from coincidence measurement of the fragment ions and the number of emitted electrons. The KEDs are drastically different depending on the number of broken C–H bonds. The underlying causes are explained by the variation of the relative contributions of the multiply ionized states and preferential fragmentation pathways. For instance, CH n + fragment ions with smaller n exhibit lower KEs because they are likely to be correlated with H + emission, which carries away a large portion of the KE release. In addition, we report the KEDs of H 3 + produced from doubly and triply charged states.