Characteristics of Paraffin Shielding of Kartini Reactor, Yogyakarta

Q4 Environmental Science

Asean Journal on Science and Technology for Development Pub Date : 2020-07-17 DOI:10.29037/AJSTD.526

L. Khanifah, S. Widodo, Widarto, N. M. D. Putra, Argo Satrio

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引用次数: 5

Abstract

The National Nuclear Energy Agency (BATAN) Yogyakarta uses two kinds of paraffin for shielding radiation of Kartini reactor. For developing BNCT research, the radiation attenuation capability of paraffin has been analyzed to find out the coefficient attenuation, density, and composition of both kinds of paraffin. The components of the paraffin were analyzed using Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) spectroscopy characterization. Paraffin P1 has a density of 0.689 gr/mL and paraffin P2 is 0.578 gr/mL. Paraffin samples P1 and P2 were the sample content of functional group CH, CH2, and OH when analyzed by FTIR. Paraffin P2 had an additional content namely CO. The concentration of carbon (C) and oxide (O) of paraffin P2 was much greater than that of paraffin P1. Hydrogen (H) in the paraffin has the function of moderating neutrons, but hydrogen content in both kinds of paraffin could not be detected by EDX. The acquired neutron coefficient attenuation of paraffin P2 was 0.0382 cm-1 and the gamma coefficient attenuation was 0.0535 cm-1.

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日惹Kartini反应器的石蜡屏蔽特性

日惹国家核能机构(BATAN)使用两种石蜡来屏蔽Kartini反应堆的辐射。为了开展BNCT研究，分析了石蜡的辐射衰减能力，找出了两种石蜡的衰减系数、密度和组成。采用傅里叶变换红外光谱(FTIR)、扫描电镜(SEM)和能量色散x射线(EDX)光谱对石蜡的成分进行了分析。石蜡P1的密度为0.689 gr/mL，石蜡P2的密度为0.578 gr/mL。石蜡样品P1和P2为FTIR分析时官能团CH、CH2和OH的样品含量。石蜡P2含有CO，其碳(C)和氧化物(O)的浓度远大于石蜡P1。石蜡中的氢(H)具有中子的慢化功能，但两种石蜡中的氢含量都不能通过EDX检测到。得到的P2石蜡中子系数衰减为0.0382 cm-1，伽马系数衰减为0.0535 cm-1。

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