Patent ID: 8611493
Filing Date: 2013-12-17
Classification: G01N

Abstract:
1. An X-ray fluorescence analyzer, comprising: a radiation source for irradiating an irradiation point on a sample with radiation; an X-ray detector for detecting a characteristic X-ray and a scattered X-ray, which are generated from the sample, to output a signal containing energy information of the characteristic X-ray and the scattered X-ray; an analyzer for analyzing the signal; a sample stage on which the sample is to be placed; a moving mechanism capable of relatively moving the sample on the sample stage and the radiation source as well as the X-ray detector; an enclosure that houses at least the radiation source, the sample stage, and the moving mechanism; a door that opens and closes an opening for putting the sample into and out of the enclosure; a moving mechanism control unit for starting the moving mechanism based on a measured height at the irradiation point so as to adjust a distance between the sample and the radiation source as well as the X-ray detector; a laser unit for irradiating the irradiation point with a visible light laser beam, the laser unit including a triangulation displacement sensor for measuring the height of the sample at the irradiation point and a first laser unit for emitting the visible light laser beam; a door open/close detection unit for detecting an open/closed state of the door; a laser start control unit for starting the laser unit to emit the visible light laser beam when the door open/close detection unit detects that the door is opened, and stopping the laser unit when the door open/close detection unit detects that the door is closed; and a height measurement mechanism start control unit for starting the laser unit to measure the height at the irradiation point when the door open/close detection unit detects that the door is opened.