Time-resolved Auger-Meitner spectroscopy of the photodissociation dynamics of CS2

被引：1

作者：

Thompson, Henry J. ^{[1
]}

Plekan, Oksana ^{[2
]}

Bonanomi, Matteo ^{[3
,5
]}

Pal, Nitish ^{[2
]}

Allum, Felix ^{[9
]}

Brynes, Alexander D. ^{[2
]}

Coreno, Marcello ^{[6
]}

Coriani, Sonia ^{[14
]}

Danailov, Miltcho B. ^{[2
]}

Decleva, Piero ^{[4
,11
]}

Demidovich, Alexander ^{[2
]}

Devetta, Michele ^{[5
]}

Facciala, Davide ^{[5
]}

Feifel, Raimund ^{[7
]}

Forbes, Ruaridh ^{[9
]}

Grazioli, Cesare ^{[4
]}

Holland, David M. P. ^{[8
]}

Piseri, Paolo ^{[3
]}

Prince, Kevin C. ^{[2
]}

Rolles, Daniel ^{[10
]}

Schuurman, Michael S. ^{[12
,13
]}

Simoncig, Alberto ^{[2
]}

Squibb, Richard J. ^{[7
]}

Tenorio, Bruno N. C. ^{[15
]}

Vozzi, Caterina ^{[5
]}

Zangrando, Marco ^{[2
,4
]}

Callegari, Carlo ^{[2
]}

Minns, Russell S. ^{[1
]}

Di Fraia, Michele ^{[2
,4
]}

机构：

[1] Univ Southampton, Sch Chem, Southampton SO17 1BJ, England

[2] Elettra Sincrotrone Trieste SCpA, I-34149 Basovizza, Italy

[3] Politecn Milan, I-20133 Milan, Italy

[4] IOM Ist Officina Materiali, Natl Res Council Italy, CNR, I-34149 Trieste, Italy

[5] IFN Ist Foton & Nanotecnol, Natl Res Council Italy, CNR, I-20133 Milan, Italy

[6] ISM Ist Struttura Mat, Natl Res Council Italy, CNR, I-34149 Trieste, Italy

[7] Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden

[8] STFC, Daresbury Lab, Warrington WA4 4AD, England

[9] SLAC Natl Accelerator Lab, Linac Coherent Light Source, Menlo Pk, CA 94025 USA

[10] Kansas State Univ, Dept Phys, JR Macdonald Lab, Manhattan, KS 66506 USA

[11] Univ Trieste, Dipartimento Sci Chim & Farmaceut, I-34121 Trieste, Italy

[12] Natl Res Council Canada, Ottawa, ON, Canada

[13] Univ Ottawa, Dept Chem & Biomol Sci, Ottawa, ON, Canada

[14] Tech Univ Denmark, Dept Chem, DK-2800 Lyngby, Denmark

[15] Ist Madrileno Estudios Avanzados Nanociencia IMDEA, Madrid 28049, Spain

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2024年 / 57卷 / 21期

基金：

瑞典研究理事会; 英国工程与自然科学研究理事会; 英国科学技术设施理事会;

关键词：

Auger spectroscopy; free electron lasers; time-resolved x-ray spectroscopy; ELECTRON SPECTROMETER; STATE; PREDISSOCIATION; RESOLUTION; BEAMLINE; PULSES; DEEP;

D O I：

10.1088/1361-6455/ad7e89

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The photodissociation dynamics of UV excited CS2 are investigated using time-resolved Auger-Meitner (AM) spectroscopy. AM decay is initiated by inner-shell ionisation with a femtosecond duration x-ray (179.9 eV) probe generated by the FERMI free electron laser. The time-delayed x-ray probe removes an electron from the S(2p) orbital leading to secondary emission of a high energy electron through AM decay. We monitor the electron kinetic energy of the AM emission as a function of pump-probe delay and observe time-dependent changes in the spectrum that correlate with the formation of bound, excited-state CS2 molecules at early times, and CS + S fragments on the picosecond timescale. The results are analysed based on a simplified kinetic scheme that provides a time constant for dissociation of approximately 1.2 ps, in agreement with previous time-resolved x-ray photoelectron spectroscopy measurements.

引用

页数：9

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