Multiple Photodetachment of Carbon Anions via Single and Double Core-Hole Creation.

Multiple Photodetachment of Carbon Anions via Single and Double Core-Hole Creation.
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通过单核和双核孔的碳阴离子多重光分离

DOI:
10.1103/physrevlett.124.083203
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发表时间:
2020
影响因子:
8.6
通讯作者:
S. Schippers
S. Schippers
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
A. Perry-Sassmannshausen;T. Buhr;A. Borovik Jr;M. Martins;S. Reinwardt;S. Ricz;S. O. Stock;F. Trinter;A. Müller;S. Fritzsche;S. Schippers

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本文报道了碳负离子通过壳层激发和电离产生的折叠光剥离的新测量结果。实验采用同步辐射光源下的光子-离子合并束技术进行。虽然以前的测量仅限于双分离()和最低能量的壳层共振在约282 eV,我们的绝对实验折叠分离截面在光子能量高达1000 eV的表现出丰富的新的阈值和共振。我们初步确定这些功能与详细的原子结构计算的帮助。特别是,我们发现明确的证据,通过双孔生产的五倍脱离。
We report on new measurements of-fold photodetachment () of carbon anions via-shell excitation and ionization. The experiments were carried out employing the photon-ion merged-beams technique at a synchrotron light source. While previous measurements were restricted to double detachment () and to just the lowest-energy-shell resonance at about 282 eV, our absolute experimental-fold detachment cross sections at photon energies of up to 1000 eV exhibit a wealth of new thresholds and resonances. We tentatively identify these features with the aid of detailed atomic-structure calculations. In particular, we find unambiguous evidence for fivefold detachment via double-hole production.
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