Mass Spectrometer With Beam Expander

摘要

A mass spectrometer is disclosed comprising a RF confinement device, a beam expander and a Time of Flight mass analyser. The beam expander is arranged to expand an ion beam emerging from the RF confinement device so that the ion beam is expanded to a diameter of at least 3 mm in the orthogonal acceleration extraction region of the Time of Flight mass analyser.

主权项

1. A mass spectrometer comprising:
a Time of Flight mass analyser comprising an orthogonal acceleration extraction region; said mass spectrometer further comprises an ion beam expander comprising one or more Einzel lenses arranged and adapted to expand an ion beam so that said ion beam has a diameter or maximum cross-sectional width >3 mm in said orthogonal acceleration extraction region.