FIELD: physics.
SUBSTANCE: invention relates to the substances and compounds study and analysis by their physical properties measurement using the mass spectrometry method. Substance ionization by electrons method when working on the mass spectrometer is that ionization is performed by electrons with variable ionization energy, for this, supplying the alternating voltage of 0 to 10 V at a frequency of 5 to 50,000 Hz to the mass spectrometer cathode, resulting in the formed at different resonance energies negative ions generation and recording.
EFFECT: expansion of the mass spectrometric analysis method functionality.
1 cl, 2 dwg
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