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首页> 外文期刊>Journal of synchrotron radiation >Sequence estimation of piled-up pulses in synchrotron-based XAFS
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Sequence estimation of piled-up pulses in synchrotron-based XAFS

机译：基于同步加速器的XAFS中堆积脉冲的序列估计

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摘要

Signal processing techniques are being developed that allow XAFS and diffraction experiments employing solid state detectors to be carried out at higher count rates by resolving shaper pulses that would otherwise be rejected or corrupted due to pile-up. This method exploits the time structure of the synchrotron generated radiation and a priori knowledge of the incident and fluorescence energies to perform sequence of event estimation based on periodically sampled observations of the shaper amplifier output. Isolated pulses are processed with a simple threshold decision much like an SCA while non-isolated pulses that produce sequence segments of finite length are processed as vectors. Once the vector is estimated, the number of fluorescence and scatter events is counted. Since these piled-up pulses are not rejected, the over all count rate of the experiment is increased.
机译：正在开发信号处理技术，该技术允许通过解决由于堆积而被拒绝或破坏的整形脉冲，从而以更高的计数率执行采用固态检测器的XAFS和衍射实验。该方法利用了同步加速器产生的辐射的时间结构以及入射和荧光能量的先验知识，以基于整形放大器输出的定期采样观察来执行事件估计序列。隔离脉冲通过简单的阈值决策进行处理，非常类似于SCA，而产生有限长度序列段的非隔离脉冲则作为矢量进行处理。一旦估计了载体，就计数荧光和散射事件的数量。由于这些堆积脉冲不被拒绝，因此增加了实验的总体计数率。

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