In the chiro-optical phenomenon known as photoelectron circular dichroism, the angular distribution of electrons ionized from chiral molecules by circularly polarized light pulses has been found to be anti-symmetric with respect to the direction of the light propagation. To study this phenomenon, chiral molecules were multiphoton ionized with a femtosecond laser in our laboratory. Using a simple stereo-detection setup, direct measurements of the asymmetry for the exemplar aromatic chiral molecule 1-phenylethanol were made using 260 nm pulses produced at a rate of 1 MHz. It was found that the asymmetry had a linear dependence on Stokes' S3 parameter indicating that the photoelectron circular dichroism is due to a single photon process from the excited state of the molecule. This is in contrast to previous and new results for camphor where a more complex dependence on S3 suggested that selective excitation of molecules with certain orientations was influential.
|Title of host publication
|Journal of Physics Conference Series
|Published - 23 Aug 2019
|24th International Conference on Spectral Line Shapes, ICSLS 2018 - Dublin, Ireland
Duration: 17 Jun 2018 → 22 Jun 2018
|Journal of Physics: Conference Series
|IOP Publishing Ltd.
|24th International Conference on Spectral Line Shapes, ICSLS 2018
|17/06/2018 → 22/06/2018
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Student thesis: Doctoral Thesis › Doctor of PhilosophyFile