ROD ASSEMBLY IN ION SOURCE

摘要

Ion source assemblies for generating ions for laser desorption mass spectrometry. An ion source assembly (100) includes a target (117) for receiving analyte samples (20) and a plurality of rods (111, 112). The rods define an interior volume having an axis (113) extending away from a surface of the target for transporting ions. One or more of the rods include an aperture (115) defining an opening through a cross-section of the rod. The aperture is configured such that a laser beam can pass through the aperture to irradiate a location on the target surface to generate ions from an analyte sample deposited at the location.