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Royal Society of Chemistry
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 ๐บ with the
ellipticity parameter |๐3/๐0|. For Trp ๐บ is found to scale linearly with |๐3/๐0|. For Phe a small
but significant deviation from linear scaling is observed in the region of 0.8 โค |๐3/๐0| โค 1, i.e.
approaching perfect circular polarization. Commonalities and differences to existing PEELD
literature are being discussed.
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