An extensive study of Mn II, Fe II, Ti II, Cr II and Cu II emission spectra from a Grimm-type glow discharge in neon was performed, using the formalism of transition rate (TR) diagrams. In this method, radiative depopulation rates of individual excited levels of a species under study are established based on the emission spectrum, prospective contributions from radiative decay of higher excited levels (cascade excitation) are subtracted and the resulting net depopulation rates are plotted as function of energy of the levels involved. A peak at a particular energy in such a diagram reflects a collisional process in operation, selectively populating levels in a narrow interval around that energy. By comparing net TR diagrams of ionic spectra of the elements listed above, a common pattern was found indicating that singly charged ions of these elements are created, in addition to other mechanisms, by charge transfer between doubly charged ions of the element under study and metastab...

中文翻译：

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霓虹辉光放电中过渡元素的双电荷离子的电荷转移：基于发射光谱的证据

使用过渡速率（TR）图的形式，对霓虹灯的格林式辉光放电中的Mn II，Fe II，Ti II，Cr II和Cu II发射光谱进行了广泛的研究。在这种方法中，根据发射光谱确定了受研究物种的单个激发能级的辐射人口减少率，减去了更高激发能级的辐射衰减（级联激发）的预期贡献，并将得出的净人口减少率绘制为所涉及的能量水平。在此图中，特定能量处的峰值反映了运行中的碰撞过程，有选择地在该能量周围的狭窄间隔中填充了各个能级。通过比较上述元素的离子光谱的净TR图，