Near-field needle-point reinforced photoionization ion source
A technology of photoionization and ion source, which is applied in the field of ion source to achieve the effect of high spatial resolution and low sample consumption
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[0021] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.
[0022] see figure 1 , the embodiment of the present invention is provided with light source, needle point 2, ion sampling device 3 and solid sample 4; The light beam 1 that described light source sends is irradiated on the surface of solid sample 4 after needle point 2, and the sampling hole of ion sampling device 3 and solid sample The distance between the surfaces of 4 is 0.1-50 mm. The output terminal of the ion sampling device 3 is connected to the mass analyzer of the mass spectrometer, and the mass analyzer of the mass spectrometer obtains a spectrum containing the information of the measured solid sample 4 .
[0023] The light source can be a continuous light source or a pulsed light source, the beam wavelength of the continuous light source can be 157-1100nm, the average power can be > 0.1mW, and the beam diameter can be 0.1-10mm; the beam wav...
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