The full characterization of the V Kβ spectral profile on an absolute energy scale

Table 4. The full characterization of the V Kβ spectral profile on an absolute energy scale. The parameters in this table are used in equation (5). Amplitudes Ai, centroids Ci and widths Wi of individual components were obtained from a fit on the intensity versus detector position axis. The detector position axis was transformed to an absolute energy scale via the calibration procedure. The Gaussian width σ was 0.805(25) eV. The background was 749(24) counts. Abstract Transition metals have Kα and Kβ characteristic radiation possessing complex asymmetric spectral profiles. Instrumental broadening normally encountered in x-ray experiments shifts features of profiles used for calibration, such as peak energy, by many times the quoted accuracies. We measure and characterize the titanium Kβ spectral profile. The peak energy of the titanium Kβ spectral profile is found to be 4931.966 ± 0.022 eV prior to instrumental broadening. This 4.5 ppm result decreases the uncertainty over the past literature by a factor of 2.6 and is 2.4 standard deviations from the previous standard. The spectrum is analysed and the resolution-free lineshape is extracted and listed for use in other experiments. We also incorporate improvement in analysis applied to earlier results for V Kβ.表4 绝对能量标度下钒Kβ（V Kβ）谱轮廓的完整表征。本表所用参数将应用于公式(5)。各组分的振幅$A_i$、质心$C_i$与宽度$W_i$通过强度随探测器位置轴的拟合获得。探测器位置轴经校准流程转换为绝对能量标度。高斯宽度$sigma$为0.805(25) eV，本底计数为749(24)。 摘要 过渡金属具有Kα与Kβ特征辐射，其谱轮廓呈现复杂的非对称形态。X射线实验中普遍存在的仪器展宽，会使峰能量这类用于校准的谱特征出现远超标称精度的偏移。本研究对钛Kβ谱轮廓开展测量与表征：未受仪器展宽影响时，钛Kβ谱轮廓的峰能量为4931.966 ± 0.022 eV。该结果的相对不确定度为4.5 ppm，相较既往文献降低了2.6倍，且与此前的标准值相差2.4个标准偏差。我们对该谱线进行分析，提取并列出了无分辨线型，以供其他实验使用。此外，本研究还对钒Kβ的早期分析结果进行了改进。