| Autor: |
Ntamack, G. E., Chandezon, F., Manil, B., Lebius, H., Tomita, S., Guet, C., Njock, M. G. Kwato, Huber, B. A. |
| Předmět: |
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| Zdroj: |
European Physical Journal D (EPJ D); Jun2003, Vol. 24 Issue 1-3, p153-156, 4p |
| Abstrakt: |
Highly charged sodium clusters produced in collisions between neutral clusters and multiply charged ions are formed within a large range of temperatures and fissilities, and identified by means of a high-resolution reflectron-type time-of-flight mass spectrometer ( m/δm ≈ 14000). The limit of stability of these charged clusters is experimentally investigated, and the time-of-flight spectra are compared with theoretical spectra based on Monte-Carlo simulations. The results indicate that the maximum fissility (X) of stable clusters is approaching the Rayleigh limit (X = 1) for larger clusters sizes. It is mainly limited by the initial neutral cluster temperature ( T ≈ 100 K) and the energy transfer in the ionizing collision. In addition, the comparison between the measured and simulated spectra suggests for high cluster charges a multi-fragmentation process, in which most of charge is emitted, creating low charged residual cluster ions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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