Ion source having a gas ionization chamber with oscillations of electrons

摘要

the invention relates to an ion source.;the source includes an ionization chamber (1) for gas, an electron source (se).means to oscillate the electrons within the chamber so as to create an ionization zone (z).it is characterized in that the means for oscillating the electron lens includes two identical electronic (l1, l2) whose axes coincide with the direction of oscillation.two spherical mirrors (m1, m2) concave turned toward one another and located on either side of the two lenses (l1,.12) and their centers coincide respectively with the home (f1, f2) of the lenses, the electron source (se1) is located in the home (f) of one of the two lenses (l1, l2).;application to the analysis of gases by mass spectrometry.