US 12,436,121 B2
X-ray fluorescence analysis device
Yuta Saito, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Appl. No. 18/274,617
Filed by SHIMADZU CORPORATION, Kyoto (JP)
PCT Filed Jul. 29, 2021, PCT No. PCT/JP2021/028103
§ 371(c)(1), (2) Date Jul. 27, 2023,
PCT Pub. No. WO2022/162975, PCT Pub. Date Aug. 4, 2022.
Claims priority of application No. 2021-010813 (JP), filed on Jan. 27, 2021.
Prior Publication US 2024/0085353 A1, Mar. 14, 2024
Int. Cl. G01N 23/223 (2006.01); G01T 1/17 (2006.01); G01T 1/24 (2006.01); G01T 1/36 (2006.01)
CPC G01N 23/223 (2013.01) [G01T 1/17 (2013.01); G01N 2223/076 (2013.01); G01N 2223/1016 (2013.01); G01N 2223/304 (2013.01); G01T 1/247 (2013.01); G01T 1/366 (2013.01)] 2 Claims
OG exemplary drawing
 
1. An X-ray fluorescence analyzer comprising:
a detector configured to detect fluorescent X-rays emitted from a sample irradiated with excitation X-rays;
preamplifiers each configured to amplify a detection signal from the detector into a staircase wave signal; and
a differentiating circuit configured to convert the staircase wave signal into a differential wave signal;
an A/D converter configured to convert the differential wave signal into a digital signal;
a signal processing unit configured to detect a peak value from the digital signal, discriminate and count the peak value, and generate a histogram; and
an input unit configured to set an energy range of fluorescent X-rays to be analyzed,
wherein an energy spectrum in the set energy range is generated based on the histogram,
wherein the preamplifiers are different in an amplification factor and arranged in a switchable manner, and
wherein any one of the preamplifiers is automatically selected based on maximum energy in the set energy range.