کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1193977 1492364 2008 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of a new open cylindrical ICR cell for ion–ion collision studies
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Characterization of a new open cylindrical ICR cell for ion–ion collision studies
چکیده انگلیسی

Experiments were done in a new open cylindrical ICR cell to establish ion–ion collisions between positive and negative ions of SF6 in the gas phase for the first time. Only one electron pulse for ion generation was employed (single shot). The role of pressure was illustrated to encourage high ion densities to be a prerequisite for ion–ion reactions. No electron transfer could be deduced from the experiments. Anion–anion collisions could be indicated. The dynamics of applied potential changes on both ion polarities in a double well potential configuration was studied intensively. In depth analysis of radial excitation patterns of positive and negative ions trapped simultaneously in different stability regions reveals sharp discrimination in the extent of radial acceleration. SIMION simulations were done to probe several electric forces, which both positive and negative ions experience during radial excitation event. Axial component of radial dipolar excitation field was also analyzed. Distortion in radial ion trajectories during radial excitation event was indicated when both ion polarities were excited simultaneously.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mass Spectrometry - Volume 269, Issues 1–2, 1 January 2008, Pages 12–23
نویسندگان
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