Figure 5.

Left: a representative time-of-flight mass spectrum of multiphoton ionized Ar atoms. Photon energy was hν = 1200 eV, pulse energy was E _p = 1.0 mJ, corresponding to 5 × 10¹² photons per pulse. Right: measured CSDs as a function of pulse energy at hν = 1200 eV for selected charge states compared with the best-fitting curves from the XATOM calculations, yielding the parameters reported in the first row of Table 3 ▸.