| 摘要 |
(57) Ion source for mass spectrometer with a chamber (1), a orifice (3) where electrospray unit is located is made in chamber (1) first end (2). At least one pipe (7) to feed compressed hot gas into the chamber (1) is installed in the chamber side wall (5) at the first end (2) of the chamber (1) tangentially to the side wall (5). At the second end (9) of the chamber (1) there is first electrode (11) with central orifice (12) for ion output surrounded by the second electrode (13) with a orifice (14) in central area, forming together with the first electrode (9) electrostatic ion focusing lens (15). There is at least one orifice (13) in the side wall (5) of the chamber (1) for gas and non-evaporated droplets exhaust, located at the distance d of the second end (8) satisfying certain equation. As per second variant the orifice (44) with sample electrospray unit is made in chamber (40) side wall (43), and the orifice (42) for gas exhaust is made in the first end (41) of the chamber (40). The chamber can be axisymmetric or non-axisymmetric and have the ends different in shape and size. The source increases the proportion of charged particles, ions most of all, coming from the ion source to the entry of mass spectrometer.
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