Effect of the shot-to-shot variation on charge migration induced by sub-fs x-ray free-electron laser pulses

被引：6

作者：

Grell, Gilbert ^{[1
,2
]}

Guo, Zhaoheng ^{[3
,4
]}

Driver, Taran ^{[4
,5
]}

Decleva, Piero ^{[6
,7
]}

Plesiat, Etienne ^{[1
,2
]}

Picon, Antonio ^{[2
]}

Gonzalez-Vazquez, Jesus

Walter, Peter ^{[4
]}

Marangos, Jonathan P. ^{[9
]}

Cryan, James P. ^{[4
,5
]}

Marinelli, Agostino ^{[3
,4
]}

Palacios, Alicia ^{[2
,8
]}

Martin, Fernando ^{[1
,2
,10
]}

机构：

[1] Inst Madrileno Estudios Avanzados Nanociencia IMD, Madrid 28049, Spain

[2] Univ Autonoma Madrid, Dept Quim, Madrid 28049, Spain

[3] Stanford Univ, Stanford, CA 94305 USA

[4] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[5] SLAC Natl Accelerator Lab, Stanford PULSE Inst, Menlo Pk, CA 94025 USA

[6] Ist Officina Mat CNR IOM, I-34149 Basovizza Trieste, Italy

[7] Univ Trieste, Dipartimento Sci Chim & Farmaceut, I-34127 Trieste, Italy

[8] Univ Autonoma Madrid, Inst Adv Res Chem IAdChem, Madrid 28049, Spain

[9] Imperial Coll London, Blackett Lab Extreme Light Consortium, London SW7 2AZ, England

[10] Univ Autonoma Madrid, Condensed Matter Phys Ctr IFIMAC, Madrid 28049, Spain

来源：

PHYSICAL REVIEW RESEARCH | 2023年 / 5卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

ABSORPTION-SPECTROSCOPY; ATTOSECOND PULSES; PEPTIDE CATIONS; DYNAMICS; MOLECULES; IONIZATION; PHOTOIONIZATION; LOCALIZATION; OPERATION; SPECTRUM;

D O I：

10.1103/PhysRevResearch.5.023092

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

X-ray free-electron lasers (XFELs) are now able to provide tunable pairs of intense sub-fs pulses in the soft x-ray regime, paving the way for time-resolved investigations of attosecond charge migration in molecules. However, the stochastic shot-to-shot variation of the XFEL pulses may degrade and eventually hide the observable features. We show by means of state-of-the-art calculations that the damping of the charge migration induced by 260 eV pulses in p-aminophenol due to the shot-to-shot variation of pulses generated at the Linac Coherent Light Source is negligible in comparison to the natural damping due to the intrinsic fluctuation of the initial molecular geometry. This result gives us confidence in the utility of XFEL sub-fs pulses for the measurement of charge migration and other ultrafast charge dynamics.

引用

页数：12

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