title: Doppler effect in fluorine K-Auger line produced in electron-induced core ionization of SF6.
abstract: An experimental evidence is reported on the observation of the Doppler effect in fluorine K-Auger line emitted from a core-ionized SF6 molecule under an impact of 16 keV electrons. The emitting source of the Auger line is found to acquire a kinetic energy of 4.7+/-0.3 keV. We propose that such large energy is released from the Coulomb repulsion taking place between F+ and SF5+ fragment ions under influence of an intense focusing field of the incident electrons. In the presence of the Coulomb field of these ions, the Auger line obtains a polarization P = 76%+/-7%.
authors.affiliation: Atomic Physics Laboratory, Department of Physics, Banaras Hindu University, Varanasi 221 005, India.
authors.forename: S
authors.initials: S
authors.lastname: Mondal
authors.forename: R K
authors.initials: RK
authors.lastname: Singh
authors.forename: R
authors.initials: R
authors.lastname: Shanker