Saribal, C;
Owens, A;
Yachmenev, A;
Küpper, J;
(2021)
Detecting handedness of spatially oriented molecules by Coulomb explosion imaging.
The Journal of Chemical Physics
, 154
(7)
, Article 071101. 10.1063/5.0029792.
(In press).
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Abstract
We present a new technique for detecting chirality in the gas phase: Chiral molecules are spatially aligned in three dimensions by a moderately strong elliptically polarized laser field. The momentum distributions of the charged fragments, produced by laser-induced Coulomb explosion, show distinct three-dimensional orientation of the enantiomers when the laser polarization ellipse is rotated by a non-right angle with respect to the norm vector of the detector plane. The resulting velocity-map-image asymmetry is directly connected to the enantiomeric excess and to the absolute handedness of molecules. We demonstrated our scheme computationally for camphor (C10H16O), with its methyl groups as marker fragments, using quantum-mechanical simulations geared toward experimentally feasible conditions. Computed sensitivity to enantiomeric excess is comparable to other modern chiroptical approaches. The present method can be readily optimized for any chiral molecule with an anisotropic polarizability tensor by adjusting the polarization state and intensity profile of the laser field.
| Type: | Article |
|---|---|
| Title: | Detecting handedness of spatially oriented molecules by Coulomb explosion imaging |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/5.0029792 |
| Publisher version: | https://doi.org/10.1063/5.0029792 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10122947 |
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