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Abstract <p>An inertial electrostatic confinement (IEC) device is often referred to as a portable neutron source and can be used as a research reactor due to its simple structure and low cost. This device includes two electrodes and a feed-stalk. By using a power source, a voltage difference is applied between two electrodes, by means of a feed-stalk connected to the inner electrode. A lot of experimental and simulation research has been done on this device all over the world. In this work, the IEC device is kinetically modeled using the particle-in-cell (PIC) method. This modeling has been done at a constant voltage of –25 kV and pressure range (<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9171_Article_IEq1.gif" Format="GIF" Height="18" Rendition="HTML" Resolution="72" Type="Linedraw" Width="62" /> </InlineMediaObject> <EquationSource Format="TEX">\(1 \times {{10}^{{ - 2}}}\)</EquationSource> <!--PhysPart2570066Ghammas-m1--> </InlineEquation> to <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9171_Article_IEq2.gif" Format="GIF" Height="18" Rendition="HTML" Resolution="72" Type="Linedraw" Width="62" /> </InlineMediaObject> <EquationSource Format="TEX">\(1 \times {{10}^{{ - 4}}}\)</EquationSource> <!--PhysPart2570066Ghammas-m2--> </InlineEquation> Torr). According to the obtained results, the number of ions increases with decreasing pressure. At <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9171_Article_IEq1.gif" Format="GIF" Height="18" Rendition="HTML" Resolution="72" Type="Linedraw" Width="62" /> </InlineMediaObject> <EquationSource Format="TEX">\(1 \times {{10}^{{ - 2}}}\)</EquationSource> <!--PhysPart2570066Ghammas-m3--> </InlineEquation> Torr, the number of ions is equal to <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9171_Article_IEq4.gif" Format="GIF" Height="18" Rendition="HTML" Resolution="72" Type="Linedraw" Width="79" /> </InlineMediaObject> <EquationSource Format="TEX">\(1.03 \times {{10}^{{11}}}\)</EquationSource> <!--PhysPart2570066Ghammas-m4--> </InlineEquation>, while at <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9171_Article_IEq2.gif" Format="GIF" Height="18" Rendition="HTML" Resolution="72" Type="Linedraw" Width="62" /> </InlineMediaObject> <EquationSource Format="TEX">\(1 \times {{10}^{{ - 4}}}\)</EquationSource> <!--PhysPart2570066Ghammas-m5--> </InlineEquation> Torr, this value increases to <InlineEquation ID="IEq6"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9171_Article_IEq6.gif" Format="GIF" Height="18" Rendition="HTML" Resolution="72" Type="Linedraw" Width="79" /> </InlineMediaObject> <EquationSource Format="TEX">\(9.35 \times {{10}^{{12}}}\)</EquationSource> <!--PhysPart2570066Ghammas-m6--> </InlineEquation>. This increase in ions shows that the mean free distance increases with the decrease in pressure, and the probability of collision between ions and neutrals decreases.</p>

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Kinetic Modeling of the IEC Device in Order to Predict the Number of Produced Ions

  • 期刊论文

  • 发表日期：

    2025年10月25日

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  • H. Ghammas,
  • M. N. Nasrabadi

摘要

Abstract

An inertial electrostatic confinement (IEC) device is often referred to as a portable neutron source and can be used as a research reactor due to its simple structure and low cost. This device includes two electrodes and a feed-stalk. By using a power source, a voltage difference is applied between two electrodes, by means of a feed-stalk connected to the inner electrode. A lot of experimental and simulation research has been done on this device all over the world. In this work, the IEC device is kinetically modeled using the particle-in-cell (PIC) method. This modeling has been done at a constant voltage of –25 kV and pressure range ( \(1 \times {{10}^{{ - 2}}}\) to \(1 \times {{10}^{{ - 4}}}\) Torr). According to the obtained results, the number of ions increases with decreasing pressure. At \(1 \times {{10}^{{ - 2}}}\) Torr, the number of ions is equal to \(1.03 \times {{10}^{{11}}}\) , while at \(1 \times {{10}^{{ - 4}}}\) Torr, this value increases to \(9.35 \times {{10}^{{12}}}\) . This increase in ions shows that the mean free distance increases with the decrease in pressure, and the probability of collision between ions and neutrals decreases.