Исследование диссоциативной поверхностной ионизации молекул тебаина нестационарными методами поверхностной ионизации

The adsorption and surface ionization of thebaine molecules C19H21O3N with m/z 311 on the surface of oxidized tungsten was studied by non-stationary methods of voltage modulation and flux modulation under the same experimental conditions using a high-vacuum mass spectrometric setup using a “black chamber”, all walls of which are cooled with liquid nitrogen. The rate constants Kd and the activation energy Еd of the reaction of dissociation of previously adsorbed thebaine molecules with bond cleavage with the formation of ionizable radicals by surface ionization have been determined. The rate constants K0 and activation energies of thermal desorption E0, as well as the pre-exponential factors in the continuity equation for С11Н12ОN+ radicals (m/z 174) were determined during the adsorption of thebaine molecules С19Н21О3N with m/z 311.

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