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提出了以NCl3分解燃烧产生Cl原子随后与含碘化合物发生作用获得碘原子的技术方法。建立了NCl3/I2燃烧体系的化学反应动力学模型,利用开发的Matlab程序进行了一维数值模拟计算。计算结果表明,I2与NCl3的流量配比对碘原子粒子数密度和产率的影响较大,且存在一个最佳范围,该最佳范围随着总压力的增大而逐渐变小。最优化的碘原子产率随着压力的增大一直在减小,说明较高的压力会损害碘原子的产生效率,因而该方法比较适合直接加入到主气流中进行反应以产生碘原子。当初始压力P0=666.61 Pa时I2与NCl3的初始配比的最佳值为0.62,此时碘原子相对于NCl3的产率为117%,相对于I2的产率为189%。计算结果说明基于NCl3/I2体系发生碘原子是一种比较有效的产生碘原子的途径。
A technical method of decomposing and decomposing combustion of Cl atoms to generate iodine atoms by iodine compounds is proposed. The chemical reaction kinetic model of NCl3 / I2 combustion system was established, and the one-dimensional numerical simulation was carried out by using the developed Matlab program. The calculated results show that the flow ratio of I2 to NCl3 has a great influence on the number density and yield of iodine atoms, and there is an optimum range, which decreases with the increase of the total pressure. The optimized yield of iodine atoms has been decreasing with increasing pressure, indicating that higher pressure would impair iodine generation efficiency. Therefore, this method is more suitable for direct addition to the main gas stream to generate iodine atoms. When the initial pressure P0 = 666.61 Pa, the optimal initial ratio of I2 to NCl3 is 0.62. At this time, the yield of iodine atom relative to NCl3 is 117% and the relative yield of I2 is 189%. The calculation results show that the iodine atom generated by NCl3 / I2 system is an effective way to generate iodine atoms.