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Updated: Jan 14, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Single photon photoelectron elliptical dichroism of amino acid anions
Jon Henrik Both1, Karl-Michael Weitzel1
1Chemistry Department, Philipps-Universität Marburg, 35032 Marburg, Germany. weitzel@chemie.uni-marburg.de.
Abstract:
Single photon photoelectron elliptical dichroism (PEELD) has been investigated in the photodetachment of electrosprayed amino acid anions, (i) tryptophan (Trp) and (ii) phenylalanine (Phe). PEELD refers to the variation of the asymmetry parameter G with the ellipticity parameter |S3/S0|. For Trp G is found to scale linearly with |S3/S0|. For Phe a small but significant deviation from linear scaling is observed in the region of 0.8 ≤ |S3/S0| ≤ 1, i.e. approaching perfect circular polarization. Commonalities and differences to existing PEELD literature are being discussed.
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