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  • 學位論文

質子碰撞游離氫原子

Proton-Impact Ionization of the Hydrogen Atom

指導教授 : 黃克寧

摘要


我們將原子核反彈效應加入相對論性雙式扭曲波方程式,用以計算質子碰撞游離氫原子總散射截面,計算之入射能量範圍為0.1到2000keV。質子、電子以及原子核的平均位置以末態之扭曲屏蔽位能來描述,而三者間的交互作用則藉由殘存位能來詮釋。與實驗比較可知,廣義的鞍部電子於入射能量低於0.3 keV時,僅占游離電子的10%以下,而當入射能量高於10 keV時,則90%的游離電子均為鞍部電子。

關鍵字

碰撞 游離 氫原子 質子 鞍部 電子 雙式扭曲波

並列摘要


Total cross sections of proton-impact ionization of the hydrogen atom are calculated with recoil effects in the relativistic two-potential formalism from 0.1 to 2000 keV incident energies. The distorting screened-potentials of final states are used to mock the time-average positions of proton, electron, and target nucleus, while correlations between three reaction products are treated with residual potentials. Comparison with experimental results demonstrates that the mechanism of saddle-point electrons, in the broad sense, gives rise to less than 10% of the ejected electrons with incident energies less than 0.3 keV, and more than 90% of the ejected electrons above 10 keV.

並列關鍵字

scattering ionization hydrogen proton saddle-point electron two-potential

參考文獻


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被引用紀錄


Wu, X. Z. (2011). 考慮量子電動力學效應之類鋰離子電子碰撞游離過程 [master's thesis, National Taiwan University]. Airiti Library. https://doi.org/10.6342/NTU.2011.02932

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