A coincidence velocity map imaging spectrometer for ions and high-energy electrons to study inner-shell photoionization of gas-phase molecules
A coincidence velocity map imaging spectrometer for ions and high-energy electrons to study inner-shell photoionization of gas-phase molecules
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DOI：
10.1063/1.5093420
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发表时间：
2019-05-01
影响因子：
1.6
通讯作者：
Rolles, Daniel
中科院分区：
文献类型：
--
作者：
Ablikim, Utuq;Bomme, Cedric;Rolles, Daniel
我们报告的设计和性能的双面符合速度图成像光谱仪优化的电子-离子和离子-离子符合实验研究内壳层的气相分子与软X射线同步辐射的光电离。该装置采用两个微通道板检测器配备有延迟线阳极重合，时间和位置分辨检测的光电子和俄歇电子与动能高达300 eV的光谱仪和光离子的一侧上的相对侧上的每单位电荷高达25 eV。我们证明了它的能力，通过测量价光电子和离子光谱的氖和氮，并通过研究通道分辨光电子和俄歇谱沿着与碎片离子动量相关氯2 p内壳电离顺式和反式-1，2-二氯乙烯。由AIP Publishing授权出版。
We report on the design and performance of a double-sided coincidence velocity map imaging spectrometer optimized for electron-ion and ion-ion coincidence experiments studying inner-shell photoionization of gas-phase molecules with soft X-ray synchrotron radiation. The apparatus employs two microchannel plate detectors equipped with delay-line anodes for coincident, time-and position-resolved detection of photoelectrons and Auger electrons with kinetic energies up to 300 eV on one side of the spectrometer and photoions up to 25 eV per unit charge on the opposite side. We demonstrate its capabilities by measuring valence photoelectrons and ion spectra of neon and nitrogen and by studying channel-resolved photoelectron and Auger spectra along with fragment-ion momentum correlations for chlorine 2p inner-shell ionization of cis- and trans-1,2-dichloroethene. Published under license by AIP Publishing.