强激光与粒子束, 2009, 21 (10): 1542, 网络出版: 2009-12-02
微通道板中电子时间倍增特性的数值模拟
Theoretical simulation of electron transit time and gain characteristics in microchannel plate
微通道板 渡越时间 入射时刻 曝光时间 分幅相机 惯性约束聚变 microchannel plate transit time exposure time framing camera inertial confinement
摘要
对微通道板的动态特性进行了数值模拟,得到了电子的渡越时间与入射时刻的关系曲线。获得了光电子的倍增次数随入射时刻而变化,并在考虑了入射电子为一高斯电子脉冲的情况下,分析了选通脉冲的幅度、宽度和波形对选通特性的影响。结果表明:随着倍增次数增多,渡越时间越大;当电压幅度不同时,增益曲线的峰值所对应的电子入射时刻也不同。
Abstract
The dynamic characteristics of micro-channel plate are simulated.The transit time and gain curves are obtained in the simulation.The simulation shows that the numbers of the electron collision on the channel wall of the microchannel plates(MCP) are related to the arriving time of the incident photoelectrons and the more frequently electrons collide with the channel,the longer transit time they need.The influence of the amplitude,width and shape of the driving voltage pulse on the exposure time and the gain of MCP are also studied when the incident electrons have a Gaussian distribution.It is concluded that the time of the peak value of the gain curve varies with different voltage pulse amplitude.
蔡厚智, 刘进元, 牛丽红, 廖华, 周军兰. 微通道板中电子时间倍增特性的数值模拟[J]. 强激光与粒子束, 2009, 21(10): 1542. Cai Houzhi, Liu Jinyuan, Niu Lihong, Liao Hua, Zhou Junlan. Theoretical simulation of electron transit time and gain characteristics in microchannel plate[J]. High Power Laser and Particle Beams, 2009, 21(10): 1542.