Patent ID: 9287104
Filing Date: 2016-03-15
CPC Classification: H01J

Claim Text:
1. A material inspection apparatus comprising: a sample mount capable of mounting a sample; a detector configured to detect an atom desorbed from the sample; a voltage generator configured to apply a voltage to the sample; a laser generator configured to irradiate a laser beam onto the sample; an arithmetic part configured to process a detection result of the detector; a storage part which stores a spectrum prediction range of a certain element and an isotope of the certain element; and a display configured to display the spectrum prediction range and an actual detection result of the detector in a comparable manner; wherein the arithmetic part is configured to generate a plurality of the spectrum prediction ranges to correspond to different numbers of atoms of the element and the isotope of the element; and wherein the arithmetic part is configured to determine that the number of atoms of the element and the isotope of the element contained in the sample is equal to or larger than the number of atoms corresponding to one of the spectrum prediction ranges when the actual detection result falls within the one of the spectrum prediction ranges, and determines that the number of atoms of the element and the isotope of the element contained in the sample is smaller than the number of atoms corresponding to the one of the spectrum prediction ranges when the actual detection result does not fall within the one of the spectrum prediction ranges.