The possibility of effective band‐reject filtration of intense spectral lines in X‐ray spectra and the creation of deep spectral valleys in the continuous spectrum by diffraction extinction was shown. Optimum material for band‐reject filters in the energy range E > 6 keV is highly oriented pyrolytic graphite (HOPG). The filtering scheme in the form of an echelon arrangement of HOPG films is proposed, which suppresses the negative effect of multiple reflections due to diffraction extinction. The full width at half minimum of the spectral valleys can vary from tens of electronvolt to several kiloelectron volt depending on the HOPG mosaic spread, HOPG filters arrangement, and rejected energy region. At the energy range E of ~10 keV, the spectral density attenuation value may be of order 10⁻³ and lower. The obtained results can be used in various fields of X‐ray spectrometry, as well as in static energy dispersive diffractometry and reflectometry.

中文翻译：

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热解石墨镶嵌结构的带阻滤X射线谱

显示了通过消光在X射线光谱中对强光谱线进行有效带阻过滤以及在连续光谱中创建深光谱谷的可能性。能量范围E  > 6 keV的带阻滤波器的最佳材料是高度取向的热解石墨（HOPG）。提出了以HOPG膜的梯形排列形式的滤波方案，该方案抑制了由衍射消光引起的多次反射的负面影响。取决于HOPG镶嵌分布，HOPG滤光片排列和拒绝的能量区域，光谱谷的半峰全宽可以从几十电子伏到几千电子伏不等。在能量范围E在〜10keV的范围内，光谱密度衰减值可以为10 ^-3或更低。所得结果可用于X射线光谱法的各个领域，以及静态能量色散衍射法和反射法。