HIGH-ENERGY CHEMISTRY CAUSED BY FAST ION-SOLID INTERACTIONS
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abstract
Plasma desorption induced by the impact of 252Cf fission fragments was used to study the emission of positive cluster ions from a lanthanum nitrate, La(NO3)3 6H2O, substrate. Two large series of peaks were observed. One corresponded to the addition of LaO+ to a repeating base unit of La2O3. A less intense series contained the same base unit, with H+ attachment. Neither series contained clusters that reflect the structure or stoichiometry of the original sample. We propose that the cluster ions are produced by high temperature and pressure chemical reactions inside the fast ion track. 1995.