Multielectron coincidence spectroscopy of the Ar2+(2p-2) double-core-hole decay

被引：4

作者：

Mailhiot, Maximilian ^{[1
,7
,8
]}

Jaenkaelae, Kari ^{[1
]}

Huttula, Marko ^{[1
]}

Patanen, Minna ^{[1
]}

Bucar, Klemen ^{[2
]}

Zitnik, Matjaz ^{[2
]}

Cubaynes, Denis ^{[3
]}

Holzmeier, Fabian ^{[4
]}

Feifel, Raimund ^{[5
]}

Ceolin, Denis ^{[6
]}

Andric, Lidija ^{[7
,8
]}

Guillemin, Renaud ^{[7
,8
]}

Ismail, Iyas ^{[7
,8
]}

Palaudoux, Jerome ^{[7
,8
]}

Penent, Francis ^{[7
,8
]}

Lablanquie, Pascal ^{[7
,8
]}

机构：

[1] Univ Oulu, Fac Sci, Nano & Mol Syst Res Unit NANOMO, POB 3000, FIN-90014 Oulu, Finland

[2] Stefan Inst, Jamova 39, SI-1000 Ljubljana, Slovenia

[3] Inst Sci Mol Orsay, Ctr Natl Rech Sci, Batiment 520 Univ Paris Sud & Paris Saclay, F-91405 Saclay, France

[4] Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy

[5] Univ Gothenburg, Dept Phys, SE-41258 Gothenburg, Sweden

[6] Synchrotron SOLEIL, Departementale 128, F-91190 St Aubin, France

[7] Sorbonne Univ, Lab Chim Phys Matiere & Rayonnement, F-75005 Paris, France

[8] Ctr Natl Rech Sci, F-75005 Paris, France

来源：

PHYSICAL REVIEW A | 2023年 / 107卷 / 06期

基金：

瑞典研究理事会; 芬兰科学院;

关键词：

PHOTOELECTRON-SPECTROSCOPY; GALAXIES BEAMLINE; DOUBLE VACANCIES; ARGON; LITHIUM; SHELL; SPECTROMETRY; EXCITATION; ENERGIES; SPECTRA;

D O I：

10.1103/PhysRevA.107.063108

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The dominant decay pathways of argon 2p-2 double-core-hole states have been investigated using synchrotron radiation and a magnetic-bottle-type spectrometer coupled with an ion time-of-flight spectrometer. This experiment allows for efficient multi-electron-ion coincidence measurements, and thus for following the Auger cascade step by step in detail. Dominant decay pathways leading to Ar4+ final states via Ar3+ intermediate states have been assigned with the help of theoretical ab initio calculations. The weak correlated decay of the two core holes by emission of a single Auger electron, leading to Ar3+ final states, has been observed at 458.5-eV kinetic energy. Compared to the total decay of the 2p-2 double core vacancies, this two-electron-one-electron process was measured to have a branching ratio of 1.9 x 10-3 & PLUSMN; 1.0 x 10-3. Furthermore, the remaining decay paths of the Ar1+ (1s-1) core hole to higher charge states and their respective contributions to the total yield have been analyzed and show very good agreement with theoretical results.

引用

页数：13

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