Surface-assisted laser desorption / ionization method, mass spectrometry method, and mass spectrometer

摘要

The surface-assisted laser desorption / ionization method according to one aspect includes a substrate 21 provided with a plurality of through holes S penetrating from one surface 21a to the other surface 21b, and a conductive layer 23 covering at least one surface 21a. And a second step in which the sample support 2 is disposed on the sample 10 so that the other surface 21b faces the sample 10. And a third step in which the sample 10 moved from the other surface 21b side through the through hole S to the one surface 21a side by ionizing the laser L onto the one surface 21a is ionized.