The k0-based internal monostandard INAA method (IM-NAA) has been investigated for the determination of elemental concentrations in non-standard geometry samples at the Dalat research reactor (DRR). The experiments were implemented at the rotary specimen rack of the DRR which the thermal neutron flux was (3.61 ± 0.11) × 1012 n cm−2 s−1. In this work, the concentration analysis of Montana II Soil (SRM 2711a) and Brick Clay (SRM 679) have been used to validate the method. The elemental concentrations of Ce, Co, Cr, Cs, Eu, Fe, Hf, La, Rb, Sb, Sm, Ta, Th, Yb, Zn have been analysed and to be in good agreement with certified values. The IM-NAA method has been applied to determine elemental concentrations in clay bricks and ceramics at the Cat Tien archaeological site.

中文翻译：

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使用大叻研究堆的内单标准 NAA 方法的标准化和应用

已经研究了基于 k0 的内部单标准 INAA 方法 (IM-NAA)，用于测定大叻研究反应堆 (DRR) 的非标准几何样品中的元素浓度。实验在热中子通量为 (3.61 ± 0.11) × 1012 n cm-2 s-1 的 DRR 旋转样品架上进行。在这项工作中，Montana II 土壤 (SRM 2711a) 和砖粘土 (SRM 679) 的浓度分析已用于验证该方法。Ce、Co、Cr、Cs、Eu、Fe、Hf、La、Rb、Sb、Sm、Ta、Th、Yb、Zn 的元素浓度已经过分析，与认证值非常吻合。IM-NAA 方法已用于确定 Cat Tien 考古遗址粘土砖和陶瓷中的元素浓度。