In this study, the absorption experiments which are an application area in XRS are discussed. The effect on the absorption parameters of the pressure applied to make pellet powder samples was investigated. The mass attenuation coefficients ( μ _m), mean free paths and half‐value layers of samples prepared at different pressures were experimentally determined. C₆H₁₀O₅, VF₄, CaO and Y₂O₃ samples were pressed at 1.91, 3.82, 5.72 and 7.63 tons/cm². A variable energy x‐ray source from Amersham (AMC.2084) was used in order to irradiate the samples at energies 13.39, 19.63, 24.90, 32.06, 36.39, 44.48, 51.70 and 59.54 keV. The photon intensities were measured by using an HPGe detector with a resolution of 182 eV at 5.9 keV. The theoretical radiation absorption parameters were calculated by WinXCOM program. The calculated values were compared with the experimental values. Good agreement has been observed within experimental uncertainties for low pellet pressure. The obtained results show that the radiation absorption parameters change with the amount of pressure applied to the sample.

中文翻译：

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压力对XRS中压制颗粒的影响

在这项研究中，吸收实验是在XRS中的应用领域。研究了制备颗粒粉末样品的压力对吸收参数的影响。质量衰减系数（μ_米），平均自由程，并在不同的压力下制备的样品的半值层实验确定。将C ₆ H ₁₀ O ₅，VF ₄，CaO和Y ₂ O ₃样品压成1.91、3.82、5.72和7.63吨/ cm ² 。为了从13.39、19.63、24.90、32.06、36.39、44.48、51.70和59.54 keV能量照射样品，使用了Amersham的可变能量X射线源（AMC.2084）。通过使用HPGe检测器在5.9 keV时分辨率为182 eV来测量光子强度。通过WinXCOM程序计算理论辐射吸收参数。将计算值与实验值进行比较。对于低颗粒压力，在实验不确定性范围内已观察到良好的一致性。获得的结果表明，辐射吸收参数随施加到样品的压力的大小而变化。