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FT-ICRによるシリコンクラスターと一酸化窒素の化学反応(熱工学,内燃機関,動力など)
2003
Chemical reaction of small silicon cluster ions (Si+n : 13, 15 Fourier Transform Ion Cyclotron Resonance) mass spectrometer. Silicon clusters were generated by a pulsed laser-vaporization supersonic-expansion cluster beam source directly connected to the FT-ICR mass spectrometer. Fully thermalized and mass-selected clusters were reacted with NO in the ICR cell. The primary reaction was the exchange of a silicon atom with a nitrogen atom as Si+n + NO→Sin-1N++SiO. Then, smaller clusters than Si23N+ (with exceptions for Si16N+ and Si20N+) fragmented to much smaller clusters. It was explained that in general smaller clusters could not survive with the exothermal reaction heat. On the other hand, the magic number clusters of Si16N+ and Si20N+ probably represented the geometrical special stability.
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