Argon diatomic ions

Spectrom., 10, 637 (1995). Reproduced by permission of the Royal Society of Chemistry.) 

Dietze, H. J., Massenspektroskopische Spurenanalyse, Akademischer Verlagsgesellschaft Geest Portig 

Marcus, R. K. and Broekaert, J. A. C., Glow Discharge Plasmas in Analytical Spectroscopy. John Wiley  

Dietze, H. J. and Becker, J. S., in Laser Ionization Mass Analysis, A. Vertes, R. Gijbels and F. Adams 

Benninghoven, A., Ruedenauer, F. G. and Werner, W. H. (eds.), Secondary Ion Mass Spectrometry. John Wiley Sons, Inc., New York (1987) Chapter I. 

Dietze, H. J., Massenspektroskopische Spurenanalyse, Akademischer Verlagsgesellschaft Geest Portig K.-G., Leipzig, (1975). 

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Fig. 3. Pressure dependence of the diatomic ion on monatomic ion intensity ratio in argon, neon, and helium. (Reproduced with permission of The Journal of Chemical Physics.)...

The diatomic ion Ar2 in an rf discharge of argon at 3 Torr appears to be formed by a Hornbeck-Molnar process at low rms voltages of the rf field and by a three-body process at high rms voltages. ... 

Chlorine as a free element is diatomic (Cl2) however, as an ion, it will gain one electron to become isoelectronic with argon. The electronic configuration of the chloride ion is s22s22p63s23p6. The compound thus formed, aluminum chloride, has the formula A1C13. 

Figure 6.4 Mass resolution required for separation of atomic ions a) from oxide ions and b) from diatomic argon ions.

Diatomic noble gas ions and diatomic hydride ions involving argon have been observed since the i930 s 11 and [ArN]+ 50) and [Arl]+ S1) were observed in collision experiments in mass spectrometers in 1960. However, none of these species were isolable as stable solids. Following the discovery of stable krypton and xenon fluorides and, in particular, recognition of the enhanced stability of [KrF]+ and [XeF]+ in crystalline solids, there has been renewed interest in the possibility of obtaining other related species. 

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