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| Experimental Study on Monochromaticity of 30~160keV Single Energy X-ray Device |
| WANG Er-yan1,2,JIANG Zheng1,2,GUO Si-ming2,WU Jin-jie2,YANG Qiang1,ZHOU Peng-yue2,SONG Rui-qiang2 |
1. College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China
2. National Institute of Metrology, Beijing 100029, China |
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Abstract The single-energy X-ray source is composed of X-ray machine, double crystal Monochromator, standard detector and collimation system. The continuous X-ray produced by X-ray machine is monochromated by Bragg diffraction with double crystal monochromator. The single energy X-ray with energy range of 30~160keV is obtained by adjusting different Bragg angles. In order to study the energy broadening of the calibration device, it is necessary to study the energy resolution of the single energy X-ray produced by the device.The results show that the energy resolution of single energy X-ray produced by Si(220) crystal is 0.91%@30keV and 2.3%@70.6keV, Si(551) crystal is 1.97%@80.1keV and 3.45%@142.6keV. The energy response of lanthanum bromide crystal detector is calibrated and verified by the device. The experimental results show that the device has good energy resolution and can be used in calibration experiments of various types of detectors, measurement of X-ray mass attenuation coefficient and reflectivity measurement of multilayer films.
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Received: 13 November 2020
Published: 24 May 2021
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2021, Vol. 42 
