Fig. 1: Summary of the experimental procedure.
From: Direct probing of low-energy intra d-band transitions in gas-phase cobalt clusters
a Scheme of the laser ablation cluster source and time-of-flight mass spectrometer connected to the beam line of the FELIX free-electron laser (more details in the Methods section). b Mass spectrum of Con+Krm clusters, with peaks labeled as n, m. Bare Con+ clusters (n = 3–15) are marked by asterisks. c–f Effect of IR irradiation at 0.28 eV (2260 cm−1) on the mass distribution (black without and red with IR light).
