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arXiv physics/9703011physics.atom-ph
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He^-中1s3s4s^4S共振的光剥离研究

Photodetachment study of the 1s3s4s ^4S resonance in He^-

Andreas E. Klinkmueller, Gunnar Haeffler, Dag Hanstorp, Igor Yu. Kiyan, Uldis Berzinsh, Christopher W. Ingram, David J. Pegg, James R. Peterson

摘要:

在He(1 s2 s ^{3}S)+ e^-(εs)部分光剥离截面中观察到与He^{-}的1 s3 s4 s ^{4}S态有关的费什巴赫共振。剩余的He(1 s2 s ^{3}S)原子被共振电离,产生的He^+离子在小背景下被检测到。共线激光离子束装置用于获得高分辨率和灵敏度。我们测得共振能量E_r = 2.959255(7)eV,宽度Γ= 0.19(3)meV,与最近的计算结果一致。

英文摘要:

A Feshbach resonance associated with the 1s3s4s ^{4}S state of He^{-} has been observed in the He(1s2s ^{3}S) + e^- (εs) partial photodetachment cross section. The residual He(1s2s ^{3}S) atoms were resonantly ionized and the resulting He^+ ions were detected in the presence of a small background. A collinear laser-ion beam apparatus was used to attain both high resolution and sensitivity. We measured a resonance energy E_r = 2.959 255(7) eV and a width Γ= 0.19(3) meV, in agreement with a recent calculation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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