Coulomb explosion imaging of CH3I and CH2CII photodissociation dynamics

被引：52

作者：

Allum, Felix ^{[1
]}

Burt, Michael ^{[1
]}

Amini, Kasra ^{[1
]}

Boll, Rebecca ^{[2
]}

Kockert, Hansjochen ^{[1
]}

Olshin, Pavel K. ^{[3
]}

Bari, Sadia ^{[2
]}

Bomme, Cedric ^{[2
]}

Brausse, Felix ^{[4
]}

de Miranda, Barbara Cunha ^{[5
]}

Duesterer, Stefan ^{[2
]}

Erk, Benjamin ^{[2
]}

Geleoc, Marie ^{[6
]}

Geneaux, Romain ^{[6
]}

Gentleman, Alexander S. ^{[7
]}

Goldsztejn, Gildas ^{[4
]}

Guillemin, Renaud ^{[5
]}

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

Ismail, Iyas ^{[5
]}

Johnsson, Per ^{[9
]}

Journel, Loic ^{[5
]}

Kuepper, Jochen ^{[10
,11
,12
,13
]}

Lahl, Jan ^{[9
]}

Lee, Jason W. L. ^{[1
]}

Maclot, Sylvain ^{[9
]}

Mackenzie, Stuart R. ^{[7
]}

Manschwetus, Bastian ^{[2
]}

Mereshchenko, Andrey S. ^{[3
]}

Mason, Robert ^{[1
]}

Palaudoux, Jerome ^{[5
]}

Piancastelli, Maria Novella ^{[5
,14
]}

Penent, Francis ^{[5
]}

Rompotis, Dimitrios ^{[2
,15
]}

Rouzee, Arnaud ^{[4
]}

Ruchon, Thierry ^{[6
]}

Rudenko, Artem ^{[16
]}

Savelyev, Evgeny ^{[2
]}

Simon, Marc ^{[5
]}

Schirmel, Nora ^{[2
]}

Stapelfeldt, Henrik ^{[17
]}

Techert, Simone ^{[2
,18
,19
]}

Travnikova, Oksana ^{[5
]}

Trippel, Sebastian ^{[10
,11
]}

Underwood, Jonathan G. ^{[20
]}

Vallance, Claire ^{[1
]}

Wiese, Joss ^{[10
,13
]}

Ziaee, Farzaneh ^{[16
]}

Brouard, Mark ^{[1
]}

Marchenko, Tatiana ^{[5
]}

Rolles, Daniel ^{[16
]}

机构：

[1] Univ Oxford, Chem Res Lab, Dept Chem, Oxford OX1 3TA, England

[2] Deutsch Elektronen Synchrotron DESY, Notkestr 85, D-22607 Hamburg, Germany

[3] St Petersburg State Univ, 7-9 Univ Skaya Nab, St Petersburg 199034, Russia

[4] Max Born Inst, Max Born Str 2A, D-12489 Berlin, Germany

[5] Sorbonne Univ, LCPMR, CNRS, F-75005 Paris, France

[6] Univ Paris Saclay, LIDYL, CEA, CNRS,CEA Saclay, F-91191 Gif Sur Yvette, France

[7] Univ Oxford, Phys & Theoret Chem Lab, Dept Chem, Oxford OX1 3QZ, England

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

[9] Lund Univ, Dept Phys, S-22100 Lund, Sweden

[10] Deutsch Elektronen Synchrotron DESY, Ctr Free Electron Laser Sci, Notkestr 85, D-22607 Hamburg, Germany

[11] Univ Hamburg, Ctr Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg, Germany

[12] Univ Hamburg, Dept Phys, Luruper Chaussee 149, D-22761 Hamburg, Germany

[13] Univ Hamburg, Dept Chem, Martin Luther King Pl 6, D-20146 Hamburg, Germany

[14] Uppsala Univ, Dept Phys & Astron, POB 516, S-75120 Uppsala, Sweden

[15] European XFEL, Holzkoppel 4, D-22869 Schenefeld, Germany

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

[17] Aarhus Univ, Dept Chem, Langelandsgade 140, DK-8000 Aarhus C, Denmark

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

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

[20] UCL, Dept Phys & Astron, London WC1E 6BT, England

来源：

JOURNAL OF CHEMICAL PHYSICS | 2018年 / 149卷 / 20期

基金：

英国工程与自然科学研究理事会; 欧盟地平线“2020”; 欧洲研究理事会;

关键词：

METHYL-IODIDE; VELOCITY; BAND; CHLOROIODOMETHANE; SPECTROSCOPY; ABSORPTION; CIS; PHOTOFRAGMENTATION; PHOTOELECTRON; EXCITATION;

D O I：

10.1063/1.5041381

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：

The photodissociation dynamics of CH3I and CH2CII at 272 nm were investigated by time-resolved Coulomb explosion imaging, with an intense non-resonant 815nmprobe pulse. Fragment ion momenta over a widem/z range were recorded simultaneously by coupling a velocity map imaging spectrometer with a pixel imaging mass spectrometry camera. For both molecules, delay-dependent pump-probe features were assigned to ultraviolet-induced carbon-iodine bond cleavage followed by Coulomb explosion. Multi-mass imaging also allowed the sequential cleavage of both carbon-halogen bonds in CH2ClI to be investigated. Furthermore, delay-dependent relative fragment momenta of a pair of ions were directly determined using recoil-frame covariance analysis. These results are complementary to conventional velocity map imaging experiments and demonstrate the application of time-resolved Coulomb explosion imaging to photoinduced real-time molecular motion. Published by AIP Publishing.

引用

页数：10

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