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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Neutronics calculation, dosimetry analysis and gas measurements of the first SINQ target irradiation experiment, STIP-I
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Neutronics calculation, dosimetry analysis and gas measurements of the first SINQ target irradiation experiment, STIP-I

机译：第一个SINQ目标辐照实验STIP-I的中子学计算，剂量学分析和气体测量

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To precisely determine the damage, helium and hydrogen production in the specimens irradiated in Swiss Spallation Neutron Source Target-3, calculations with the MCNPX code, dosimetry analysis and helium/hydrogen measurements have been performed. The MCNPX calculations agree well with the former calculations performed with the LAHET code. The preliminary analysis of dosimetry foils demonstrates that the unfolded proton and neutron spectra at limited positions are close to calculated values. In general the measured He concentrations were consistent with the calculated values. Some discrepancy between the measured and calculated values is believed due to the actual proton beam geometry being different from that used for the calculation. The hydrogen concentration measured in samples irradiated at similar to250 degreesC, only a small amount of hydrogen remains in the samples. (C) 2003 Elsevier Science B.V. All rights reserved. [References: 12]
机译：为了精确确定在瑞士散裂中子源Target-3辐射的样品中的损伤，氦气和氢气的产生，已经执行了使用MCNPX代码，剂量学分析和氦气/氢气测量的计算。 MCNPX计算与使用LAHET代码执行的先前计算非常吻合。剂量测定箔的初步分析表明，有限位置的未折叠质子和中子光谱接近计算值。通常，测得的He浓度与计算值一致。由于实际的质子束几何形状与用于计算的质子束几何形状不同，因此可以认为测量值和计算值之间存在一些差异。在<类似于100℃辐照的样品中测得的氢浓度接近计算值。在较高温度下辐射的样品的测量值与计算值之间的差异在很大程度上可归因于氢扩散的影响。结果表明，在>接近250摄氏度时，样品中仅残留少量氢气。 （C）2003 Elsevier Science B.V.保留所有权利。 [参考：12]

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