Appearance size and appearance energy of
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P. Scheier; G. Walder; A. Stamatovic; T.D. MΓ€rk
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Article
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1988
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Elsevier Science
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English
β 461 KB
Multiply charged ammonia clusters are produced by electron impact ionization of neutral NH, clusters formed by nozzle cxpansion. The properties of these ions are studied with a high-resolution double-focusing sector field mass spectrometer. The observed critical appearance sizes are n, = 5 I and n,