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Spektrometria mas klasterów gazowych

Ptasińska S.

Prace Naukowe Politechniki Warszawskiej. Elektronika

2002

z. 143

65-68

The adiabatic expansion of gas through a small orifice (nozzle) into a vacuum is today the most common method of producing neutral gaseous clusters. In the present investigation, the generation of ammonia clusters from the mixture of gases is studied by using a electron impact ion source and a double focusing sector field mass spectrometer. Results of measurements of the generation of (NH3)nH(+) clusters ions versus the percentage abudance of ammonia in the mixtures NH3/Ar or NH3/He at several stagnation pressure are described.