Electron-impact ionization and ionic fragmentation of O$_{2}$ from threshold to 120 eV energy range

التفاصيل البيبلوغرافية
العنوان: Electron-impact ionization and ionic fragmentation of O$_{2}$ from threshold to 120 eV energy range
المؤلفون: Lomsadze, R. A., Gochitashvili, M. R., Kezerashvili, R. Ya., Schulz, M.
المصدر: International Journal of Modern Physics B, 35, 2150104 (2021)
سنة النشر: 2020
المجموعة: Physics (Other)
مصطلحات موضوعية: Physics - Atomic Physics
الوصف: We study the electron-impact induced ionization of O$_{2}$ from threshold to 120 eV using the electron spectroscopy method. Our approach is simple in concept and embodies the ion source with a collision chamber and a mass spectrometer with a quadruple filter as a selector for the product ions. The combination of these two devices makes it possible to unequivocally collect all energetic fragment ions formed in ionization and dissociative processes and to detect them with known efficiency. The ion source allows to vary and tune the electron-impact ionization energy and the target-gas pressure. We demonstrate that for obtaining reliable results of cross sections for inelastic processes and determining mechanisms for the formation of O$^{+}$($^{4}S,^2{D},^2{P}$) ions, it is crucial to control the electron-impact energy for production of ion and the pressure in the ion source. A comparison of our results with other experimental and theoretical data shows good agreement and proves the validity of our approach.
Comment: 11 pages, 7 figures. arXiv admin note: substantial text overlap with arXiv:1905.01146
نوع الوثيقة: Working Paper
DOI: 10.1142/S0217979221501046
URL الوصول: http://arxiv.org/abs/2011.12784
رقم الأكسشن: edsarx.2011.12784
قاعدة البيانات: arXiv