A generalised algorithm for spectral reconstruction in Compton spectroscopy with corrections for coherent scattering.
A generalised algorithm for spectral reconstruction in Compton spectroscopy with corrections for coherent scattering.
复制标题
康普顿光谱中光谱重建的通用算法，具有相干散射校正。
DOI：
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发表时间：
1989
影响因子：
3.5
通讯作者：
R. Ribberfors
中科院分区：
文献类型：
--
作者：
G. Matscheko;R. Ribberfors
从康普顿光谱仪中获得的脉冲高度分布的初级光子能谱的重建已经在先前进行的假设下，在散射体中的相干散射是可以忽略的。这适用于在40-150 kV范围内运行的大多数临床X射线设备。在乳房X线摄影中，并且在某种程度上在牙科X线摄影中，初级射束中的相对高频率的低能光子（小于30 keV）使得有必要扩展算法以允许相干散射的显著贡献。这种扩展是作为一个扰动计算的算法开发的早期，其中修改后的Klein-Nishina散射截面作为总散射截面。与原束中测量的能谱的比较表明，具有扩展算法的康普顿谱仪是测量能量低至几keV的能谱的极好的仪器。
Reconstruction of primary-photon energy spectra from pulse-height distributions obtained in a Compton spectrometer has earlier been performed under the assumption that coherent scattering in the scatterer is negligible. This holds for most clinical x-ray units operated in the range 40-150 kV. In mammography, and to some extent in dental radiography, the relatively high frequency of low-energy photons (less than 30 keV) in the primary beam makes it necessary to extend the algorithms to allow for significant contribution of coherent scattering. This extension is performed as a perturbation calculation to the algorithms developed earlier in which a modified Klein-Nishina scattering cross section was taken as the total scattering cross section. Comparison with energy spectra measured in the primary beam indicates that the Compton spectrometer with the extended algorithm is an excellent instrument for measuring energy spectra with energies down to a few keV.
通过蒙特卡罗模拟研究锗探测器的能量响应并校正测量光谱。
影响因子：
3.4
作者：
Chan,HP;Chen,CT;Doi,K;Fewell,TR;Shuping,RE
通讯作者：
Shuping,RE