| 摘要 |
An ion source 400, which may be a MALDI ion source, is cleaned with laser desorption, which may use UV radiation. The system includes a mirror 450 which has two reflective surfaces 450a, b. Light at a first wavelength (optionally UV) is reflected on the first reflective surface 450a onto the ion source surface 440 in order to remove contaminant material. Light at a second wavelength or frequency (optionally visible light) passes through the first reflective surface 450a and reflects on the second reflective surface 450b onto the surface of the ion source 440, and from there to an imaging apparatus, and may produce an image of the ion source. The light at the first wavelength or frequency may be the same as that used for analyzing a sample material to be analysed using the ion source 400. The imaging apparatus may be the same as that which produces an image of the sample. The mirror 450 may be moved in order to scan the whole surface of the ion source and the surfaces 450a, b may be concave. |
