Charge transfer in dissociating iodomethane and fluoromethane molecules ionized by intense femtosecond X-ray pulses

被引：61

作者：

Boll, Rebecca ^{[1
,2
]}

Erk, Benjamin ^{[1
]}

Coffee, Ryan ^{[3
]}

Trippel, Sebastian ^{[4
]}

Kierspel, Thomas ^{[4
,5
]}

Bomme, Cedric ^{[1
]}

Bozek, John D. ^{[3
]}

Burkett, Mitchell ^{[6
]}

Carron, Sebastian ^{[3
]}

Ferguson, Ken R. ^{[3
]}

Foucar, Lutz ^{[7
]}

Kuepper, Jochen ^{[4
,5
,8
]}

Marchenko, Tatiana ^{[9
]}

Miron, Catalin ^{[10
,11
]}

Patanen, Minna ^{[10
,12
]}

Osipov, Timur ^{[3
]}

Schorb, Sebastian ^{[3
]}

Simon, Marc ^{[9
]}

Swiggers, Michelle ^{[3
]}

Techert, Simone ^{[1
,13
,14
]}

Ueda, Kiyoshi ^{[15
]}

Bostedt, Christoph ^{[3
,16
,17
]}

Rolles, Daniel ^{[1
,6
]}

Rudenko, Artem ^{[6
]}

机构：

[1] Deutsch Elektronen Synchrotron DESY, D-22607 Hamburg, Germany

[2] Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany

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

[4] DESY, Ctr Free Electron Laser Sci, D-22607 Hamburg, Germany

[5] Univ Hamburg, Ctr Ultrafast Imaging, D-22761 Hamburg, Germany

[6] Kansas State Univ, JR Macdonald Lab, Manhattan, KS 66506 USA

[7] Max Planck Inst Med Res, D-69120 Heidelberg, Germany

[8] Univ Hamburg, Dept Phys, D-22761 Hamburg, Germany

[9] UPMC Univ Paris 06, Sorbonne Univ, CNRS, Lab Chim Phys Mat & Rayonnement,UMR 7614, F-75005 Paris, France

[10] Synchrotron SOLEIL, BP 48, F-91192 Gif Sur Yvette, France

[11] Horia Hulubei Natl Inst Phys & Nucl Engn, Extreme Light Infrastruct Nucl Phys, RO-077125 Magurele, Jud Ilfov, Romania

[12] Univ Oulu, Mol Mat Res Community, POB 3000, FIN-90014 Oulu, Finland

[13] Max Planck Inst Biophys Chem, D-37077 Gottingen, Germany

[14] Univ Gottingen, Inst Xray Phys, D-37077 Gottingen, Germany

[15] Tohoku Univ, IMRAM, Sendai, Miyagi 9808577, Japan

[16] Argonne Natl Lab, Lemont, IL 60439 USA

[17] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

来源：

STRUCTURAL DYNAMICS-US | 2016年 / 3卷 / 04期

基金：

美国国家科学基金会;

关键词：

IONIZATION; EXCITATION; DYNAMICS; IONS;

D O I：

10.1063/1.4944344

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ultrafast electron transfer in dissociating iodomethane and fluoromethane molecules was studied at the Linac Coherent Light Source free-electron laser using an ultraviolet-pump, X-ray-probe scheme. The results for both molecules are discussed with respect to the nature of their UV excitation and different chemical properties. Signatures of long-distance intramolecular charge transfer are observed for both species, and a quantitative analysis of its distance dependence in iodomethane is carried out for charge states up to I21+. The reconstructed critical distances for electron transfer are in good agreement with a classical over-the-barrier model and with an earlier experiment employing a near-infrared pump pulse. (C) 2016 Author(s).

引用

页数：15

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