Single and double ionization of magnesium by electron impact: A classical study

被引：1

作者：

Dubois, J. ^{[1
]}

Berman, S. A. ^{[1
,2
]}

Chandre, C. ^{[1
]}

Uzer, T. ^{[2
]}

机构：

[1] Aix Marseille Univ, CNRS, Cent Marseille, I2M, Marseille, France

[2] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA

来源：

PHYSICAL REVIEW A | 2017年 / 95卷 / 02期

关键词：

CROSS-SECTIONS; MULTIPLE IONIZATION; ATOMS; MG; COLLISIONS; BARIUM; ARGON; IONS;

D O I：

10.1103/PhysRevA.95.022713

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We consider electron impact-driven single and double ionization of magnesium in the energy range of 10 to 100 eV. Our classical Hamiltonian model of these (e, 2e) and (e, 3e) processes sheds light on their total cross sections and reveals the underlying ionization mechanisms. Two pathways are at play in single ionization: delayed and direct. In contrast, only the direct process is observed in double ionization, ruling out the excitation-autoionization channel. We also provide evidence that the so-called Two-Step 2 mechanism predominates over the Two-Step 1 mechanism, in agreement with experiments.

引用

页数：10

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