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Coupling of a Rydberg electron capture ion source with a quadrupole mass filter

✍ Scribed by M. Carette; Y. Zerega; R. E. March; P. Perrier; J. Andre

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
231 KB
Volume
14
Category
Article
ISSN
0951-4198

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✦ Synopsis

The coupling of a Rydberg electron capture ion source with a Nermag R10-10H quadrupole mass filter is described. Details are given of the addition to this instrument of a creation cell for atoms excited in Rydberg states. Within the Nermag ion source, such atoms allow attachment of electrons of well-defined thermal energy. SF 6 was used for optimization of the main experimental parameters (gas pressures and voltages applied to the electrodes). The procedure by which Rydberg electron attachment was confirmed is described. A polychlorobiphenyl compound was used to illustrate the performance of this ionization technique. Ion formation was observed in the absence of fragmentation.

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