Models of formation and erosion of a plasma column in a silicon surface-barrier detector
Models of formation and erosion of a plasma column in a silicon surface-barrier detector
复制标题
硅表面势垒探测器中等离子体柱的形成和腐蚀模型
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
I. Kanno
中科院分区：
文献类型：
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作者：
I. Kanno
等离子体柱的形成和侵蚀的定量模型。利用该模型计算了等离子体柱的半径、体积和表面积以及电子空穴对的数量和密度。在腐蚀模型中，认为等离子体柱体积的增大引起的等离子体柱介电性质的变化是腐蚀的原因。等离子体柱的内部电场强度被确定为时间的函数。用该模型计算了α粒子、~（40）Ar和~（129）Ar离子的等离子体延迟，并与其他作者的实验结果进行了比较。理想情况下，复合效应应计算为复合速率和等离子体延迟时间间隔的乘积。然而，由于缺乏足够的实验数据，这里使用两个参数来估计235 U热中子诱发裂变的裂变碎片。
Quantitative models of the formation and erosion of the plasma column are presented. With the model of formation, the radius, volume, and surface area of the plasma column and the number and the density of the electron‐hole pairs are calculated. In the model of the erosion, the change of the dielectric quality of the plasma column due to the enlargement of its volume is considered to be the cause of the erosion. The internal electric field strength of the plasma column is determined as a function of time. With this model, plasma delays are estimated for alpha particle, 40Ar and 129Xe ions and are compared with other author’s experiments. Ideally the recombination effect should be calculated as a product of the recombination rate and the time interval of the plasma delay. However, it is estimated here using two parameters for the fission fragments from thermal‐neutron‐induced fission of 235U because of the lack of adequate experimental data.