Coupling of a Rydberg electron capture ion source with a quadrupole mass filter.
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.
Carette
M
M
Institut Universitaire des Systèmes Thermiques Industriels, C.N.R.S. , U.M.R. 6595, Universit¿e de Provence, Technop¿ole de Chateau - Gombert, 5 rue Enrico Fermi, F 13453 Marseille Cedex 20, France.
Zerega
Y
Y
March
R E
RE
Perrier
P
P
Andre
J
J
D008401:Gas Chromatography-Mass Spectrometry / Q000295:instrumentation* / Q000379:methods; D011078:Polychlorinated Biphenyls / Q000032:analysis; D011874:Radiometry / Q000295:instrumentation
D011078:Polychlorinated Biphenyls