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Cluster-impact fusion II: Time-of-flight experiments.

Time-of-flight cluster-impact fusion studies were carried out by pulsing low-velocity beams. Time-of-flight mass spectra and experiments in which the production of fusion protons was correlated with the arrival times of the cluster ions at the target show that low-molecular-weight ions containing oxygen (i.e., D{sub 2}O{sup +},D{sub 3}O{sup +}) cannot be responsible for observed fusion events.