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    • Toward real-time charged-particle image reconstruction using polar onion-peelingPeer reviewedClosed access 

      2009, LECOINTRE, Julien; Roberts, G. M.; Nixon, J. L.; Wrede, E.; Verlet, J. R. R., HENALLUX
      Article scientifique
      A method to reconstruct full three-dimensional photofragment distributions from their two-dimensional (2D) projection onto a detection plane is presented, for processes in which the expanding Newton sphere has cylindrical symmetry around an axis parallel to the projection plane. The method is based on: (1) onion-peeling in polar coordinates [Zhao et al., Rev. Sci. Instrum. 73, 3044 (2002)] in which ...

    • Velocity-map imaging at low extraction fieldsPeer reviewedClosed access 

      2012, LECOINTRE, Julien; Horke, D. A.; Roberts, G. M.; Verlet, J. R. R., HENALLUX
      Article scientifique
      We present a velocity-map imaging (VMI) setup for photoelectron imaging that utilizes low electric extraction fields. This avoids any complications that could arise from electrostatic interactions between the extraction field and the molecular properties that are probed and has a minimal effect on the trajectory of ions in ion beam experiments. By using an attractive potential supplied to the detector, ...