Osipov, T.Stener, M.Belkacem, A.Schöffler, M.Weber, Th.Schmidt, L.Landers, A.Prior, M. H.Dörner, R.Cocke, C. L.2023-12-072023-12-072010-03-31https://hdl.handle.net/2097/43796Measurements of the photoelectron angular distributions in the body-fixed frame (MFPAD) have been carried out for 290- to 320-eV photons (just above the carbon K-shell ionization threshold) on C2H4 using an approach based on cold-target recoil-ion momentum spectroscopy (COLTRIMS). The results are compared with a theoretical calculation and excellent agreement is found. A direct verification of the “f-wave shape resonance” is accomplished by obtaining the complex amplitude of the l=3 partial wave, which shows a peak in its absolute value and a relative phase change of π as the energy is scanned across the resonance.© American Physical Society (APS). This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).Text