Attosecond-pump attosecond-probe x-ray spectroscopy of liquid water

被引：35

作者：

Li, Shuai ^{[1
]}

Lu, Lixin ^{[2
]}

Bhattacharyya, Swarnendu ^{[3
]}

Pearce, Carolyn ^{[4
,5
]}

Li, Kai ^{[1
,6
,7
]}

Nienhuis, Emily T. ^{[4
]}

Doumy, Gilles ^{[1
]}

Schaller, R. D. ^{[8
]}

Moeller, S. ^{[9
]}

Lin, M. -F. ^{[9
]}

Dakovski, G. ^{[9
]}

Hoffman, D. J. ^{[9
]}

Garratt, D. ^{[10
]}

Larsen, Kirk A. ^{[10
]}

Koralek, J. D. ^{[9
]}

Hampton, C. Y. ^{[9
]}

Cesar, D. ^{[9
]}

Duris, Joseph ^{[9
]}

Zhang, Z. ^{[9
]}

Sudar, Nicholas ^{[9
]}

Cryan, James P. ^{[9
,10
]}

Marinelli, A. ^{[9
,10
]}

Li, Xiaosong ^{[2
]}

Inhester, Ludger ^{[3
,11
]}

Santra, Robin ^{[3
,11
,12
]}

Young, Linda ^{[1
,6
,7
,8
]}

机构：

[1] Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60439 USA

[2] Univ Washington, Dept Chem, Seattle, WA 98195 USA

[3] Deutsch Elektronen Synchrotron DESY, Ctr Free Electron Laser Sci CFEL, Hamburg, Germany

[4] Pacific Northwest Natl Lab, Richland, WA 99352 USA

[5] Washington State Univ, Dept Crop & Soil Sci, Pullman, WA 99164 USA

[6] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[7] Univ Chicago, James Franck Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA

[8] Argonne Natl Lab, Ctr Nanoscale Mat, Lemont, IL USA

[9] SLAC Natl Accelerator Lab, Menlo Pk, CA USA

[10] SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA USA

[11] Hamburg Ctr Ultrafast Imaging, Hamburg, Germany

[12] Univ Hamburg, Dept Phys, Hamburg, Germany

来源：

SCIENCE | 2024年 / 383卷 / 6687期

关键词：

DYNAMICS; PULSES; TRANSITION; PHASE; TIME;

D O I：

10.1126/science.adn6059

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Attosecond-pump/attosecond-probe experiments have long been sought as the most straightforward method for observing electron dynamics in real time. Although there has been much success with overlapped near-infrared femtosecond and extreme ultraviolet attosecond pulses combined with theory, true attosecond-pump/attosecond-probe experiments have been limited. We used a synchronized attosecond x-ray pulse pair from an x-ray free-electron laser to study the electronic response to valence ionization in liquid water through all x-ray attosecond transient absorption spectroscopy (AX-ATAS). Our analysis showed that the AX-ATAS response is confined to the subfemtosecond timescale, eliminating any hydrogen atom motion and demonstrating experimentally that the 1b1 splitting in the x-ray emission spectrum is related to dynamics and is not evidence of two structural motifs in ambient liquid water.

引用

页码：1118 / 1122

页数：5

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