Multiple photodetachment of atomic anions via single and double core-hole creation
Multiple photodetachment of atomic anions via single and double core-hole creation
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通过单核和双核孔产生原子阴离子的多重光脱离
DOI：
10.1088/1361-6455/aba719
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
A. Müller
中科院分区：
文献类型：
--
作者：
S. Schippers;A. Perry-Sassmannshausen;T. Buhr;M. Martins;S. Fritzsche;A. Müller
本文综述了原子阴离子K壳层分离研究的最新实验和理论进展。在实验方面，这一领域在很大程度上得益于第三代同步辐射光源的技术进步。对于C-−、O-−和F-−离子的多重分离，在德国汉堡Petra III同步加速器光源的束线P04的永久终端站--光子-离子合束设置管上获得了最新的结果。除了与以前提供的相比，光子通量大大增加外，管道设置对重荷反应产物具有非凡的检测灵敏度，使人们能够研究千巴范围内具有极低横截面的脱离过程，例如，如在F−的净三分离和C−的净五倍分离中观察到的由单个光子同时创建两个芯孔的过程。此外，迄今为止被忽视的光剥离共振已经被发现，它显示出各种线形。对于O-−，芯-空穴寿命可以通过高分辨率的光剥离共振测量来精确地确定。这些实验发现对最先进的原子理论提出了新的挑战，需要结合光激发(电离)和衰减级联过程的计算，这些过程在最初的芯孔产生之后紧随其后。
We review the recent experimental and theoretical progress in K-shell detachment studies of atomic anions. On the experimental side, this field has largely benefitted from technical advances at 3rd generation synchrotron radiation sources. For multiple detachment of C−, O−, and F− ions, recent results were obtained at the photon-ion merged-beams setup PIPE which is a permanent end station at beamline P04 of the PETRA III synchrotron light source in Hamburg, Germany. In addition to a much increased photon flux as compared to what was available previously, the PIPE setup has an extraordinary detection sensitivity for heavy charged reaction products that allows one to study detachment processes with extremely low cross sections in the kilobarn range, eg, for processes involving the simultaneous creation of two core-holes by a single photon as observed in the net triple detachment of F− and the net five-fold detachment of C−. Moreover, hitherto disregarded photodetachment resonances have been discovered, which exhibit a variety of line shapes. For O− the core-hole lifetime could be determined precisely from a high-resolution measurement of a photodetachment resonance. These experimental findings pose new challenges for state-of-the-art atomic theory and require calculations combining photoexcitation (ionization) with decay cascade processes that follow after initial core-hole production.
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影响因子：
4.6
作者：
Feifel R;Eland JHD;Carniato S;Selles P;Püttner R;Koulentianos D;Marchenko T;Journel L;Guillemin R;Goldsztejn G;Travnikova O;Ismail I;Miranda BC;Lago AF;Céolin D;Lablanquie P;Penent F;Piancastelli MN;Simon M
通讯作者：
Simon M
Li-的内壳光脱离
DOI：
10.1088/0953-4075/34/10/107
发表时间：
2001
期刊：
Journal of Physics B
影响因子：
--
作者：
H. Kjeldsen;P. Andersen;F. Folkmann;B. Kristensen;T. Andersen
通讯作者：
T. Andersen
内壳与 K− 离子的光脱离
DOI：
10.1088/0953-4075/40/5/009
发表时间：
2007
期刊：
Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子：
--
作者：
A. Covington;R. Kraus;E. Emmons;S. Duvvuri;V. Davis;D. Calabrese;D. Davis;C. Cisneros;A. Schlachter;M. Gulley;D. Hanstorp;J. Thompson;D. J. Pegg
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D. J. Pegg
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DOI：
10.1088/1742-6596/1412/20/202027
发表时间：
2019
期刊：
Journal of Physics: Conference Series
影响因子：
--
作者：
A. Müller;Michael Martins;A. Kilcoyne;R. Phaneuf;J. Hellhund;Alexander Borovik;K. Holste;S. Bari;T. Buhr;S. Klumpp;A. Perry;S. Reinwardt;S. Ricz;K. Schubert;S. Schippers
通讯作者：
S. Schippers
Fano 线轮廓与高斯卷积的解析表达式
DOI：
10.1016/j.jqsrt.2018.08.003
发表时间：
2012
影响因子：
2.3
作者：
S. Schippers
通讯作者：
S. Schippers