منابع مشابه
A combined field ionisation-electron impact ion source for high molecular weight samples of low volatility.
1964 B E C K E Y reported about a combined field ionisation/electron impact source1 the commercial version of which is shown in Fig. 1 2. Vhe vapour to be analyzed enters the source via an inlet line. However such inlet is suitable only for sampes of not too low volatility. For the qualitative analysis of organic compounds of very low volatility evaporation out of an oven (direct inet) in the i...
متن کاملChronic Beryllium Disease: Revealing the Role of Beryllium Ion and Small Peptides Binding to HLA-DP2
Chronic Beryllium (Be) Disease (CBD) is a granulomatous disorder that predominantly affects the lung. The CBD is caused by Be exposure of individuals carrying the HLA-DP2 protein of the major histocompatibility complex class II (MHCII). While the involvement of Be in the development of CBD is obvious and the binding site and the sequence of Be and peptide binding were recently experimentally re...
متن کاملElectron-impact double ionization of beryllium
Time-dependent close-coupling, R-matrix double pseudo-states and distorted-wave methods are used to calculate the electron-impact double ionization cross section for the 1s22s2 ground state of the Be atom. At 1.5 times the double ionization threshold energy, the first two non-perturbative methods predict a cross section of approximately 1.0 × 10−18 cm2 for the direct double ionization of the 2s...
متن کاملCharge exchange in collisions of beryllium with its ion.
Close-coupling calculations of the resonance and near resonance charge exchange in ion-atom collisions of Be at low and intermediate energies are presented. Accurate ab initio calculations are carried out of the Born-Oppenheimer potentials and the non-adiabatic couplings that are due to the finite nuclear masses and drive the near resonance charge exchange. We show that the near resonance charg...
متن کاملBeryllium and Beryllium Compounds
Please note that the layout and pagination of this pdf file are not identical to those of the printed CICAD
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2015
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/635/2/022073