X-Ray tube and x-ray fluorescence analyser utilizing selective excitation radiation

摘要

#$%^&*AU2012203317B220150409.pdf#####18 Abstract An X-ray tube comprises a cathode, an anode with an electron receiving surface, and a window facing the electron receiving surface of the anode. On the electron receiving surface of the anode it comprises a layer of anode material. Deeper in the anode than said layer of anode material there is a block of attenuator material. The atomic number of said attenuator material is less than one third of the atomic number of the anode material. Fig. 42/3 302 303 1 301 304 Fig. 3 FROM4050 55 402 CATHODE 403 FROM 504 505 FROM CATHODE CATHODE TO 404 SAMPLE 502 405 J 401 503 TO SAMPLE Fig. 4 Fig. 5 604 606 Fig. 6