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Electron-impact dissociation cross sections of vibrationally excited He molecular ion

R Celiberto, K L Baluja, R K Janev, V Laporta2016年Plasma Physics and Controlled FusionIF 2.2出版社

Electron-impact cross sections for the dissociation process of vibrationally excited He molecular ion, as a function of the incident electron energy are calculated for the dissociative transition by using the R-matrix method in the adiabatic-nuclei approximation. The potential energy curves for the involved electronic states and transition dipole moment, also calculated with the R-matrix method, were found to be in good agreement with the results reported in literature. The vibrationally resolved dissociation cross sections of He exhibit a resonant structure around 7 eV. The observed strong variation of the magnitude of this structure with the vibrational level is explained in terms of the overlap of initial and final (continuum) state wave functions in the Franck–Condon region.

日本語訳

振動励起されたHe分子イオンの解離過程に対する電子衝突断面積を、断熱核近似におけるR行列法を用いて、解離遷移について入射電子エネルギーの関数として計算した。関与する電子状態のポテンシャルエネルギー曲線と遷移双極子モーメントもR行列法で計算し、文献で報告されている結果と良好な一致を示した。Heの振動分解解離断面積は、約7 eV付近に共鳴構造を示す。この構造の大きさの振動準位に対する顕著な変化は、フランク=コンドン領域における初期状態と最終(連続)状態の波動関数の重なりによって説明される。

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