title: Communication: Three-fold covariance imaging of laser-induced Coulomb explosions.
abstract: We apply a three-fold covariance imaging method to analyse previously acquired data [C. S. Slater et al., Phys. Rev. A 89, 011401(R) (2014)] on the femtosecond laser-induced Coulomb explosion of spatially pre-aligned 3,5-dibromo-3',5'-difluoro-4'-cyanobiphenyl molecules. The data were acquired using the "Pixel Imaging Mass Spectrometry" camera. We show how three-fold covariance imaging of ionic photofragment recoil trajectories can be used to provide new information about the parent ion's molecular structure prior to its Coulomb explosion. In particular, we show how the analysis may be used to obtain information about molecular conformation and provide an alternative route for enantiomer determination.
authors.affiliation: The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom.
authors.forename: James D
authors.initials: JD
authors.lastname: Pickering
authors.affiliation: The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom.
authors.forename: Kasra
authors.initials: K
authors.lastname: Amini
authors.affiliation: The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom.
authors.forename: Mark
authors.initials: M
authors.lastname: Brouard
authors.affiliation: The Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom.
authors.forename: Michael
authors.initials: M
authors.lastname: Burt
authors.affiliation: Oxford e-Research Centre, 7 Keble Road, Oxford OX1 3QG, United Kingdom.
authors.forename: Ian J
authors.initials: IJ
authors.lastname: Bush
authors.affiliation: Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark.
authors.forename: Lauge
authors.initials: L
authors.lastname: Christensen
authors.affiliation: The Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom.
authors.forename: Alexandra
authors.initials: A
authors.lastname: Lauer
authors.affiliation: Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark.
authors.forename: Jens H
authors.initials: JH
authors.lastname: Nielsen
authors.affiliation: The Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom.
authors.forename: Craig S
authors.initials: CS
authors.lastname: Slater
authors.affiliation: Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO), Langelandsgade 140, Aarhus University, DK-8000 Aarhus C, Denmark.
authors.forename: Henrik
authors.initials: H
authors.lastname: Stapelfeldt