Abstract

Dissociation pathways of tellurium clusters, Te(n)(+) (n = 25-85), were investigated by secondary ion mass spectrometry. Positively charged ions were generated from a tellurium sheet by bombardment with 10 keV xenon ion beam. Mass analyses of cluster ions were performed using a grand-scale sector mass spectrometer. In the first field-free region, Te(n)(+) (n = 25-80) had a large dissociation probability with five- and six-atom emission and Te(n)(+) (n = 50-85) had a slightly large dissociation probability with 10- and 11-atom emission. Five- and six-atom dissociation in the second field-free region could be also observed. These results were most likely due to the cluster emission processes for Te(n)(+), although sequential atom emission and cluster emission could not be distinguished by this type of experiments.

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