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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >On discrepancies in atomic photoeffect cross sections in the low photon energy region
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On discrepancies in atomic photoeffect cross sections in the low photon energy region

机译：低光子能量区域中原子光效应截面的差异

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摘要

Studies on photon interaction with matter provide a wealth of data for various applied scientific fields. While large amounts of compiled data are available on photon cross sections, significant discrepancies have been observed at very low photon energies, especially in the region of absorption edges; the cross section in some elements shows approximately 10% variation with theory. In the present study, attenuation studies have been made for energies below 60 keV for the elements Zr, Pd, Cd, In, and Ta, these being situations in which discrepancies have been noted. Use has been made of a narrow beam, good geometry situation, coupled with a Freolectric cooled Si(Li) detector attached to a System 100 Canberra multichannel analyser. Total photon and total photoelectric cross sections have been deduced and compared with theory.
机译：光子与物质相互作用的研究为各种应用科学领域提供了大量数据。尽管在光子截面上有大量的汇编数据，但是在非常低的光子能量下，尤其是在吸收边缘区域，观察到了显着差异。一些元素的横截面显示出理论上的大约10％的变化。在本研究中，对于Zr，Pd，Cd，In和Ta元素的能量低于60 keV的情况，已经进行了衰减研究，这些情况都已引起差异。已经使用了窄光束，良好的几何形状，并结合了系统100堪培拉多通道分析仪上的经Freolectric冷却的Si（Li）检测器。推导了总光子截面和总光电截面，并与理论进行了比较。

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