Schematic diagram of organic ligand-protected metal cluster fragmentation under 193 nm laser irradiation (IMAGE)
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The precursor cluster ions were guided into laser dissociation chamber. A single-shot laser irradiation with a pulse length of 5 ns was applied for the dissociation of ligand-protected cluster precursors and the generation of the complex metal nanoclusters. The complex fragment clusters were cooled down within the dissociation chamber (20 mTorr N2) for about 100 ms and then transferred to the orbitrap analyzer for high-throughput characterization before the arrive of next laser shot (with about 300 ms interval between adjacent shots).
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