Precision Measurements and Computations of Transition Energies in Rotationally Cold Triatomic Hydrogen Ions up to the Midvisible Spectral Range

First-principles computations and experimental measurements of transition energies are carried out for vibrational overtone lines of the triatomic hydrogen ion ${\mathrm{H}}_{3}^{+}$ corresponding to floppy vibrations high above the barrier to linearity. Action spectroscopy is improved to detect ext... View More