JPS61155758U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an embodiment of the object composition determination apparatus according to the present invention, and FIG. 2 is a diagram showing the state of irradiation of an X-ray beam onto a sample. 1: X-ray tube, 2: sample, 3: slit, 4: through hole, 5: X-ray beam, 6: first sensor, 7: second sensor, 8: calculation circuit, 9: computer.

Claims (1)

[Scope of utility model registration request] A sample is irradiated with X-rays emitted from an X-ray tube, the amount of X-rays that have passed through the sample and the amount of X-rays that have not passed through the sample are detected by respective X-ray amount detection sensors, and the thickness of the sample is detected by the sensors. In an apparatus for determining the composition of a sample based on the value divided by the logarithmic ratio of each detected value, a slit having a plurality of through holes is placed either before or after the sample, and the A plurality of first sensors are disposed to detect the X-ray dose A of each X-ray beam generated after passing through the sample after passing through the sample, and a second sensor is further disposed to detect the X-ray dose B that has not passed through the sample. At the same time, the transmission distance d/cos θ of the X-ray beam is calculated from the inclination θ of each X-ray beam and the thickness d of the sample, and the transmission distance d/cos θ of the X-ray beam and the first sensor and the second sensor are calculated. A calculation circuit was provided to calculate the ratio of the X-ray doses A and B detected by the sensor to the logarithmic ratio lnBA, and a computer was connected to the calculation circuit to determine the composition of the sample based on the values calculated by the calculation circuit. A multi-point measurement type object composition determination device characterized by the following.