Fluorine Assessment of Igneous Rocks by Neutron Activation Analysis

核科学与技术国际期刊(英文) Pub Date : 2016-07-09 DOI:10.4236/WJNST.2016.63015

A. M. Abdelbagi

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引用次数: 1

Abstract

The main goal of the current study was to determine the fluorine in the rock samples coal (SARM-18, SARM-19, and SARM-20), opal glass NBS91 and phosphate rock NBS694 using neutron activation analysis. Neutrons energy of 14 MeV used for irradiation was produced by bombardment of a water-cooled titanium tri-tide target with a beam of deuterons accelerated to a potential of 350 KV to develop a neutron flux (108 n⋅cm-2⋅s-1) on the sample at the neutron generator in the ECN (Netherlands Energy Research Foundation) Petten. This new approach contributes to the existing knowledge of fluorine measurement by the coincidence channels investigation of the positron energy with respect to decay time for each radionuclide element. The present study was designed to determine the fluorine by fast neutron through the reaction of F19 (n, 2n) F18. Interference was treated by irradiating the standard of these elements and reasonable selection of the decay time between the end of irradiation and beginning of counting time. The results of this method indicate that the concentration of fluorine is agreed fairly with literatures.

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用中子活化分析法评价火成岩中的氟

本研究的主要目的是利用中子活化分析法测定岩石样品煤(SARM-18、SARM-19和SARM-20)、蛋白石玻璃NBS91和磷矿NBS694中的氟。在荷兰能源研究基金会(ECN) Petten的中子发生器上，用加速到350 KV的氘核轰击水冷钛三潮靶，在样品上产生108 n⋅cm-2⋅s-1的中子通量，产生了14 MeV的辐照中子能量。这种新方法有助于通过对每个放射性核素元素的正电子能量与衰变时间的重合通道研究来测量氟的现有知识。本研究采用快中子法通过F19 (n, 2n) F18反应测定氟。通过辐照这些元素的标准和合理选择辐照结束和计数开始之间的衰变时间来处理干扰。结果表明，氟的浓度与文献计算结果吻合较好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

核科学与技术国际期刊(英文)

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198