Electron-ion-ion coincidence experiments for photofragmentation of polyatomic molecules using pulsed electric fields: treatment of random coincidences

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dc.creatorPruemper, G.
dc.creatorUeda, K.
dc.date2007-02-05
dc.date.accessioned2026-07-07T07:44:52Z
dc.date.available2026-07-07T07:44:52Z
dc.descriptionIn molecular photofragmentation processes by soft X-rays, a number of ionic fragments can be produced, each having a different abundance and correlation with the emitted electron kinetic energy. For investigating these fragmentation processes, electron-ion and electron-ion-ion coincidence experiments, in which the kinetic energy of electrons are analyzed using an electrostatic analyzer while the mass of the ions is analyzed using a pulsed electric field, are very powerful. For such measurements, however, the contribution of random coincidences is substantial and affects the data in a non-trivial way. Simple intuitive subtraction methods cannot be applied. In the present paper, we describe these electron-ion and electron-ion-ion coincidence experiments together with a subtraction method for the contribution from random coincidences. We provide a comprehensive set of equations for the data treatment, including equations for the calculation of error-bars. We demonstrate the method by applying it to the fragmentation of free CF$_3$SF$_5$ molecules.
dc.description30 pages, 4 figures, submitted to NIMA
dc.identifierhttps://arxiv.org/abs/physics/0702032
dc.identifierhttp://arxiv.org/abs/physics/0702032
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/123353
dc.subjectAtomic Physics
dc.subjectInstrumentation and Detectors
dc.titleElectron-ion-ion coincidence experiments for photofragmentation of polyatomic molecules using pulsed electric fields: treatment of random coincidences
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