Davis: A Direct Algorithm For Velocity-Map Imaging System

Recently, we reported a direct (non-iterative) algorithm to reconstruct the three-dimensional momentum-space picture of any charged particles collected with a velocity-map imaging system from the two-dimensional projected image captured by a position-sensitive detector. The method consists of fitting the measured image with an analytical 2D projection of a model 3D velocity distribution defined by the physics of the light-matter interaction. In this work, we present a systematic comparison of the level of performance (accuracy and speed) of our method with others well-known techniques for inverting experimental images.