Reactions in the system HBr+ + HCl (DCl) were investigated inside a guided ion-beam apparatus under single-collision conditions. In the HBr+ + HCl system are the proton transfer (PTHCl) and...
Self-reactions observed in the HBr + (DBr + ) + HBr system have been investigated using a guided ion-beam experiment under single-collision conditions. The reaction channels observed are proton transfer/hydrogen abstraction (PT/HA) in the case of HBr + and deuteron transfer/hydrogen abstraction (DT/HA) and charge transfer (CT) in the case of DBr + . HBr + /DBr + ions have been formed with rotational energies selected using the resonance-enhanced multiphoton ionization (REMPI) formation process. Cross sections have been measured as a function of the rotational energy of the ion, E rot , and of the center-of-mass collision energy, E cm . In the region of low rotational energies, the cross section for both PT/HA and DT/HA decreases with increasing ion rotation. In this region, the cross section for CT increases with increasing ion rotation. For higher rotational energies, the cross section increases with increasing ion rotation for PT/HA and less pronounced for DT/HA. The cross section for CT becomes independent of ion rotation for high rotational energies. Since all reaction channels are exothermic, all cross sections decrease with increasing E cm .
The electronic work function, w(e−), and the ionic work function, w(Li+), of a lithium ultraphosphate, Li0.67PO2.8, have been measured by thermionic emission in the Richardson–Dushman regime. The values derived are w(Li+) = 1.99 ± 0.18 eV and w(e−) = 2.64 ± 0.38 eV. The measurements have been made possible by the implementation of a micro-channel plate detector, allowing the counting of single charge carrier particles, equivalent to a detection limit on the order of 1 aA. The ionic work function is demonstrated to increase with increasing lithium content in a series of lithium phosphates.
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