离子回旋共振同位素分离过程影响因素探究  

Exploration of influencing factors on ion cyclotron resonance isotope separation process

作　　者：郭凯 杨佳琦 GUO Kai;YANG Jiaqi(Research Institute of Physical and Chemical Engineering of Nuclear Industry,Tianjin 300180,China;National Key Laboratory of Particle Transport and Separation Technology,Tianjin 300180,China)

机构地区：[1]核工业理化工程研究院,天津300180 [2]粒子输运与富集技术全国重点实验室,天津300180

出　　处：《物理学报》2025年第9期117-123,共7页Acta Physica Sinica

基　　金：粒子输运与富集技术全国重点实验室基础基金(批准号:GZ-WZJC-2023-02)资助的课题.

摘　　要：离子回旋共振(ion cyclotron resonance,ICR)方法是一种通过选择性加热目标离子实现分离效应的先进同位素分离方法.为确定各参数对ICR分离过程影响,开展了ICR同位素分离理论研究,基于单粒子模型方法对等离子体束流在稳恒磁场与交变电场组合场中的传输过程进行数值模拟,对初始等离子体束流、共振加热区电磁场等影响分离效应的核心参数进行分析.结果表明,共振区交变电场强度、射频天线波长、共振区尺寸、等离子体初始轴向能量及其分布对等离子体束流整体加热效果均存在明显影响;共振区磁感应强度、射频天线波长、等离子体初始轴向能量分布对加热过程的选择性存在直接影响.所得结论对ICR分离装置参数的初步设计有一定借鉴价值.The ion cyclotron resonance(ICR)isotope separation method is an advanced electromagnetic separation method.The key process of this method is the transport of ions in an axial magnetic field.By injecting microwaves at the target ion cyclotron frequency,only the target ions can be heated so that the energy values of target ions can be distinguished.Due to its high separation coefficient,multiple types of isotopes that can be separated,and high flux,some countries have already built ICR isotope separation devices and conducted various isotope separation experiments since 1980.The main elements of an ICR separation device include three parts:a plasma source,a selective ion heating system,and an ion collector.The electron cyclotron resonance(ECR)ion source is the most popular plasma source,which generates the ions to be separated.The selective ion heating system is the key part of the separation device,mainly composed of a superconducting magnetic coil and a radio frequency(RF)antenna,which are used to provide a stable magnetic field and microwaves at a specific frequency to heat the target isotope ions,respectively.The ion collector is used to collect the separated ions.To clarify the key process of the ICR separation method,the transport process of ions in the electromagnetic field inside the selective ion heating system is simulated,and the influences on the selective heating effects of core parameters,such as parameters of initial plasma beam and electromagnetic field inside the selective ion heating system,are discussed in detail.The numerical simulation model used in this study is the single particle model,in which the interaction between ions and the induced electromagnetic field of the plasma beam is ignored.The simulation results show that the intensity of the alternating electric field in the selective ion heating system,the wavelength of the RF antenna,the size of the ion selective heating system,the initial axial energy of the plasma and its distribution all have a significant influence on the overall heat

关 键 词：离子回旋共振 同位素分离 选择性加热 等离子体束流 

分 类 号：O571.5[理学—粒子物理与原子核物理]