Cover image for Vol. 17 Issue 3

Editor: Greta Heydenrych; Editorial Board Chairs: Christian Amatore, Michael Grätzel, Michel Orrit

Impact Factor: 3.419

ISI Journal Citation Reports © Ranking: 2014: 7/34 (Physics Atomic Molecular & Chemical); 41/139 (Chemistry Physical)

Online ISSN: 1439-7641

Associated Title(s): Advanced Materials, ChemBioChem, ChemCatChem, ChemElectroChem, ChemSusChem, Small

14_07/2013Cover Picture: Tomographic Reconstruction of Designer Free-Electron Wave Packets (ChemPhysChem 7/2013)

Designer electron wave packets are created by multiphoton ionization of potassium atoms employing polarization-shaped femtosecond laser pulses, as reviewed on p. 1341 by M. Wollenhaupt et al. In order to reconstruct the three-dimensional photoelectron momentum distribution, we use a velocity-map imaging spectrometer to measure multiple projections at different angles by rotating the pulse with a l/2 plate. This procedure is illustrated for elliptically polarized light in the lower row. The images along the arrows (top left) show the evolution of measured projections towards a prescribed target (T) during an iterative optimization of the polarization-shaped pulse.

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