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首页> 外文期刊>Transactions of the American nuclear society >Applying method of integral thermal neutron cross-section measurement using activated prompt gamma rays to non-l/v isotopes
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Applying method of integral thermal neutron cross-section measurement using activated prompt gamma rays to non-l/v isotopes

机译：活化瞬发伽马射线对非l / v同位素的积分热中子截面测量的应用方法

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摘要

Thermal neutron capture y-ray cross section data were internally calibrated with stoichiometric compounds or accurately-prepared mixtures for all stable elements at the Budapest Reactor in a guided thermal neutron beam. The resulting database was named the Evaluated Gamma-ray Activation File (EGAF).. These data were generally complete for the light isotopes (Z＜20), allowing for determination of new, precise total radiative thermal neutron capture cross section directly from the decay scheme as the sum of the γ-ray production cross sections (σ_γ) feeding the ground state. Since the decay schemes for heavier isotopes are incomplete due to the unresolved continuum transitions, the Monte Carlo computer code DICEBOX is used for simulation of the neutron capture decay schemes in order to account for the contribution from the continuum γ-rays feeding the ground state.
机译：用化学计量化合物或精确制备的混合物在布达佩斯反应堆中通过热中子束对内部稳定的热中子捕获y射线横截面数据进行了校准，以用于所有稳定元素。由此产生的数据库称为“评估的伽马射线活化文件”（EGAF）。这些数据对于轻同位素（Z ＜20）通常是完整的，从而可以直接从衰变中确定新的精确的总辐射热中子俘获截面。方案是馈入基态的γ射线产生截面（σ_γ）的总和。由于重同位素的衰变方案由于未解决的连续谱跃迁而不完整，因此使用蒙特卡洛计算机代码DICEBOX模拟中子俘获衰变方案，以计算连续的γ射线对基态的贡献。

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  • 来源
    《Transactions of the American nuclear society》 |2013年第1期|118-120|共3页
  • 作者

    D. Turkoglu; S. Glover; H. Spitz; L. Cao;

  • 作者单位

    Nuclear Engineering Program Department of Mechanical and Aerospace Engineering The Ohio State University, Columbus, OH USA;

    University of Cincinnati, Cincinnati, OH USA;

    University of Cincinnati, Cincinnati, OH USA;

    Nuclear Engineering Program Department of Mechanical and Aerospace Engineering The Ohio State University, Columbus, OH USA;

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