Quantitative data processing of parallel recorded electron energy‐loss spectra with low signal to background
Quantitative data processing of parallel recorded electron energy‐loss spectra with low signal to background
复制标题
低背景信号的并行记录电子能量损失谱的定量数据处理
DOI：
10.1063/1.1138336
复制
发表时间：
1985
影响因子：
1.6
通讯作者：
P. Kruit
中科院分区：
文献类型：
--
作者：
H. Shuman;P. Kruit
已经检查了用于测量叠加在大背景上的小光谱特征的多元件阵列探测器的性能。为了仅通过计数统计来限制检测的灵敏度，必须严格考虑两个因素：阵列检测器的不均匀空间响应，以及收集系统可能添加的噪声。对于这里讨论的特殊情况，即 100 keV 电子的能量损失光谱，增加的噪声很小。测量检测量子效率(DQE)为DQE＝0.87。测试了几种减少不均匀响应影响的技术：用实验测量的响应曲线对光谱进行归一化、电子微分以减少背景、动态增益校正以及通过测量一系列重新定位的光谱来实验平均空间响应的两种方法。事实证明，保存代表性能量损失谱中存在的统计信息是可行的……
The performance of a multielement array detector for measuring small spectral features superimposed on a large background has been examined. In order to have the sensitivity of detection limited only by counting statistics, two factors have to be critically considered: the nonuniform spatial response of the array detector, and the possible addition of noise by the collection system. For the special case discussed here, energy‐loss spectroscopy of 100‐keV electrons, the added noise was small. The detective quantum efficiency (DQE) was measured to be DQE=0.87. Several techniques reducing the effect of the nonuniform response were tested: normalizing the spectra with an experimentally measured response curve, electronic differentiation to reduce the background, dynamic gain correction, and two methods of experimentally averaging the spatial response by measuring a sequence of repositioned spectra. Preservation of the statistical information present in a representative energy‐loss spectrum is shown to be feas...
生物学中的电子探针和电子能量损失分析。
影响因子：
2.2
作者：
Somlyo,AP;Shuman,H
通讯作者：
Shuman,H
铁蛋白的能量过滤透射电子显微镜。
DOI：
10.1073/pnas.79.1.106
发表时间：
1982
影响因子：
11.1
作者：
Shuman,H;Somlyo,AP
通讯作者：
Somlyo,AP