by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence

Full Title

Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 > by measuring secondary emission from the material > by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence