Fig. 3: Momentum and energy of \({\mathrm{H}}_{3\,}^{+}\).
From: Anomalous formation of trihydrogen cations from water on nanoparticles

a 2D momentum image demonstrating the angular distribution in the plane of laser propagation vs. nanoparticles jet where the laser polarization is perpendicular to this plane and b energy distribution of \({\mathrm{H}}_{3}^{+}\) emitted from the surface of 300 nm silica nanoparticles inhabited by H2O molecules at a laser intensity of 2 × 1014 W/cm2. Source data are provided as a Source Data file.