Dielectronic capture with subsequent two-electron emission in electron-impact ionization of C3+ ions.
Dielectronic capture with subsequent two-electron emission in electron-impact ionization of C3+ ions.
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C3 离子电子碰撞电离中的双电子捕获和随后的双电子发射。
DOI：
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发表时间：
1988
影响因子：
8.6
通讯作者：
Salzborn
中科院分区：
文献类型：
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作者：
Müller;Hofmann;Tinschert;Salzborn
在 C/sup 3+/ 离子的电子轰击电离中，我们发现了共振激发自动双电离过程的第一个明确的实验证据。这些涉及离子捕获射弹电子并同时进行 K 壳层激发并随后发射两个相关电子。测量的 1s2s/sup 2/2p /sup 3/P 贡献的共振强度为 (2.0 +- 0.4) x 10/sup -20/ cm/sup 2/ eV。此外，我们还通过状态 1s2s2l 解决了激发自电离的个体阈值，并确定了对净单电离的其他共振贡献。
In electron-impact ionization of C/sup 3+/ ions we found the first unambiguous experimental evidence for resonant-excitation auto-double-ionization processes. These involve capture of the projectile electron by the ion with simulataneous K-shell excitation and subsequent emission of two correlated electrons. The resonance strength measured for the 1s2s/sup 2/2p /sup 3/P contribution is (2.0 +- 0.4) x 10/sup -20/ cm/sup 2/ eV. In addition, we resolved individual thresholds of excitation autoionization via states 1s2s2l and identified other resonant contributions to net single ionization.