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We report the first measurements of the electron-stimulated-desorption ion-angular-distributions of negative ions from surfaces. The angular distributions of F^- ions for electron-stimulated desorption of PF₃, NF₃, and (CF₃)₂CO on Ru(0001) depend on the molecular geometry and the state of the adsorbed species. The structural information obtained from these negative-ion studies complements that from similar positive-ion studies.
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Johnson et al. (1988) studied this question.
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