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
基金
欧盟地平线“2020”; 欧洲研究理事会; 英国工程与自然科学研究理事会;
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.
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页数:10
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