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A comparison of ion emission from NaNO3 produced by keV energy atomic and polyatomic primary ions

✍ Scribed by M. J. Van Stipdonk; D. R. Justes; V. Santiago; E. A. Schweikert

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
218 KB
Volume
12
Category
Article
ISSN
0951-4198

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✦ Synopsis

Sodium nitrate was bombarded with Cs , (CsI)Cs and (CsI) 2 Cs projectiles in the energy range 10 to 20 keV. Measurements of relative secondary ion yields demonstrate that Cs produces a greater abundance of O Γ€ and OH Γ€ from the surface; the yields of complex secondary ions are higher using the polyatomic projectiles. The yield ratio of NO 3 Γ€ to NO 2 Γ€ , indicative of chemical damage induced by the projectile impact, is not sensitive to the kinetic energy of the projectile in the energy range examined, but is instead a function of the number of atoms in the projectile. For surface analysis, this study shows that the most effective polyatomic projectile is one composed of a few constituents.

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