论文标题
o $ _ {2} $从阈值到120 eV能量范围的o $ _ {2} $的电离电离和离子片段化
Electron-impact ionization and ionic fragmentation of O$_{2}$ from threshold to 120 eV energy range
论文作者
论文摘要
我们使用电子光谱法研究了从阈值到120 eV的o $ _ {2} $的电子诱导的电离。我们的方法在概念上很简单，并用碰撞室和带有四倍过滤器作为产品离子的选择器体现了离子源。这两种设备的组合使得可以明确收集在电离和解离过程中形成的所有能量碎片离子，并以已知效率检测它们。离子源允许变化并调整电子撞击电离能和目标气体压力。我们证明，为了获得非弹性过程的横截面的可靠结果，并确定了O $ $^{+} $（$^{4} s，^2 {d}，^2 {p} $）离子的形成机制，这对于控制ION和ION ION PRISSION ION PRISSION和ION ION ION ION PRISSION CONDEN COUCTIAL对于ION和ION ION ION ION ION CONDRATY COCTIANT COUCTIAL。我们的结果与其他实验和理论数据的比较表明了良好的一致性，并证明了我们方法的有效性。
We study the electron-impact induced ionization of O$_{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.
