瞬态电磁场或脉冲电磁场生物效应的机理研究

本文采用宽带横电磁场传输室系统地从实验方面研究了细胞在瞬态电磁场作用下产生的非热生物学效应，并初步提出了其作用机理。     

用于瞬态电磁场测量的宽带脉冲天线

脉冲天线是脉冲雷达、瞬态电磁场测量等应用的关键设备之一。本文描述了用于瞬态电磁场测量的一种宽带脉冲天线的设计，给出了测量结果，测量结果表明，该天线具有高保真和宽频带特性，有有效地发射或接收毫微秒脉冲信号。实际制作的天线已成功地应用于外场瞬态电磁测试系统。     

电磁场非热生物效应机理研究

本文综述了当前国内外连续电磁场与冲击脉冲电磁场非热生物效应机理研究的现状。分析了连续电磁场比较成熟的几种机理，并指出了它们的局限性。着重介绍了冲击脉冲电磁场目前研究的最新动态。     

超强激光与等离子体相互作用研究的最新进展

本文综述了峰值脉冲功率高达１０＾１２Ｗ的激光与等离子体相互作用研究的进展，这些研究将对原子物理学，等离子体物理的研究和发展以及加速器的应用产生重大影响。     

串联MEMS开关的瞬态电磁场分析

提出了一种串联MEMS开关的电磁耦合模型，并且应用该模型，对采用表面硅工艺和体硅工艺制作的MEMS开关，采用全波分析方法，进行了瞬态电磁场分析。由于开关尺寸为微米量级，而驱动电压高达40～60V，这样的瞬态高压有可能对开关上的信号产生影响。理论仿真结果显示，开关驱动路对信号路有很强的耦合场存在。实验结果同样显示，耦舍到信号路的信号可以输入信号产生最大值为60％的失真。     

瞬态强电磁场传感器时域联合校准研究

由于连续波幅值限制、额外时-频转换等问题,IEEE Std 1309-2013中的频域校准方法很难应用到瞬态强电磁场传感器的校准上,为此提出了一种更加适用的时域联合校准方法.经过分析,在时域校准中,可以采用脉冲上升沿来等效时域校准中的频带宽度,利用不同幅值的脉冲信号进行激励后得到的校准系数在时域和频域校准中也是相同的.根据标准电磁场产生装置场强均匀性和上限频率的差异,时域联合校准方法采用镜面单锥进行上升沿校准,采用TEM小室进行传感器系数校准,并详细介绍了其校准及操作流程.     

超强激光与等离子体相互作用研究的最新进展

本文综述了峰值脉冲功率高达１０１２Ｗ的激光与等离子体相互作用研究的进展．这些研究将对原子物理学、等离子体物理的研究和发展以及加速器的应用产生重大影响．     

超强激光与物质的相互作用

台式脉冲激光器具有产生太瓦峰值功率的能力，对原子物理、等离子体物理和加速器技术正发生革命性的影响。     

弯曲通道长度及倾斜角度对雷电电磁场影响研究

为了得到弯曲通道雷电电磁脉冲场的分布特性,将电流微源偶极子进行水平分解和垂直分解,利用偶极子法对弯曲通道产生电磁场的表达式进行了推导.在此基础上就底部回击通道长度以及上部回击通道倾斜角度对地表电磁场的影响规律进行了相关研究.研究结果表明,弯曲通道的电磁场峰值主要取决于底部放电通道的长度,在中间场和远场区底部通道越长对应的电磁场幅值越小;而倾斜角度对近场区电磁场影响极小,在中间场和远场区电磁场幅值会随着倾斜角度的增加而降低,且距离越远倾斜角度对电磁场幅值的影响越明显.     

长脉冲激光与金属相互作用的影响

文章主要研究对象为长脉冲激光和金属材料,首先分析了长脉冲激光可能对金属产生的影响,然后通过理论与实际相结合的方式,又针对长脉冲激光对物质的作用展开了探究,希望文中讨论的内容可以在某些方面给相关人员以启发。     

Experimental and Theoretical Studies on Electromagnetic Fields Induced Inside Finite Biological Bodies

The total electric field inside some simulated biological bodies induced by an electromagnetic wave has been quantified by the recently developed tensor integral equation method and measured by an insulated probe. In general, the induced electric field inside a biological body was found to be quite complicated. An excellent agreement was obtained between theory and experiment.     

Quantification of Interaction Between ELF?LF Electrc Fields and Human Bodies

A numerical method, based on surface-charge integral equations, has been developed to quantify the interaction of ELF-LF electric fields with a human body that has a realistic shape and arbitrary posture and is situated in a realistic environment. The induced electric fields at the body surface and inside the body, the induced body current, and effects of the grounding impedance can be accurately quantified by the present method. The agreement between the method and various existing experimental data is very good.     

The Interaction of Static and Alternating Electric Fields with Biological Systems

A discussion is presented regarding the presence of natural and man-made electric fields in our environment. It is seen that biological objects readily come into contact with such fields. The interaction of some biological objects with electric fields is presented as well as original experimentation in this area. One experiment discussed deals with the influence of a 245 V/in (96.5 V/cm) electric field on the glucose concentration (as measured by per cent transmission) of human red blood cells. The data presented show an influence by the field. The second experiment discussed deals with the behavioral manifestations of electric fields on rats. An approach-avoidance procedure is utilized. The data presented shows an avoidance response at a high electric field intensity (4.5 kV/in) (1.77 kV/cm). Practical applications of this area of study are also presented.     

Comment on "Experimental and Theoretical Studies on Electromagnetic Fields Induced Inside Finite Biological Bodies" (Letters)

The above paper states unequivocally: "When a probe is immersed in a finite biological body to measure the induced electric field, the output of the probe becomes Iocation dependent, especially at the edge of the body." This statement is only true for an electrically large dipole antenna with a relatively low impedance detector as a load. We have developed a set of probe design criteria for implantable electric field probes. These criteria have been applied to produce a miniature isotropic probe which is neither location dependent nor calibration dependent with respect to the dielectric properties of the surrounding media. This calibration independence is analyzed as a function of dipole insulation thickness by Smith.     

ZnS:Mn,Sm材料中Mn中心与不同的Sm中心的相互作用及温度的影响

本文系统地研究了硫化锌材料中Mn中心与不同的Sm中心的相互作用.证实了Mn中心与不同的Sm中心的相互作用存在很大的差异.另外在77-500K温度范围内测量了Mn中心和Sm中心的发射光谱,发现温度对它们之间的能量传递有着重要的影响.     

The Electric-Field Probe Near a Material Interface with Application to the Probing of Fields in Biological Bodies

A theoretical model is formulated to determine the effect of an interface between different media on the response of an electric-field probe. The model used provides a "worst case" estimate of the interaction between the probe and the interface. The effect of the interface on the response of the probe is examined as a function of the size of the probe, the insulation on the probe, the load admittance at the terminals of the probe, the dissipation in the surrounding medium and the spacing between the probe and the interface. The use of electricity small bare and insulated probes to measure the field in the interior of biological bodies is discussed as an example. Measured results are shown to be in general agreement with the theory.     

220 GHz回旋速调管放大器互作用理论的研究

应用注波互作用非自洽非线性模拟程序,对220GHz回旋速调管放大器的注波互作用进行了研究;分析了工作电流、工作电压、直流磁场对电子注效率影响。模拟结果表明,设计出的双腔回旋速调管放大器的电子效率为48%,相应的输出功率为20 kW。     

彩色交流等离子体显示板辉光扩展的研究

交流等离子体显示板（简称ＡＣＰＤＰ）的显示像元的放电是通过气体作为耦合介质，电极间是通过电介质作为耦合介质的，因而属于容性结构，放电较为复杂。理论上描述电流和器件特性较为困难，国外曾经从实验中作过某些定性的讨论。本文从理论上分析了ＡＣＰＤＰ放电气体与介质、介质与发光像元间的相互作用及发光容量不同时发光像元之间的影响以及所产生的辉光扩展，成功地解释了实验现象。     

单片机的ESD EMP效应及加固技术研究

ESD EMP(静电放电产生的电磁脉冲)具有上升沿陡、频带宽和峰值大等特点,对电子系统具有很强的干扰和破坏作用。为研究ESD EMP对电子系统的影响,以单片机为实验对象,对单片机系统进行了ESD EMP辐照效应实验。实验表明,单片机系统在ESD EMP作用下,会出现10多种故障现象。文中在实验基础上研究了单片机加固技术。     

ESD与EMP对微波晶体管损伤机理研究

主要论述了电子装备中易受静电放电(ESD)和电磁脉冲(EMP)损伤的微波半导体器件的失效模式和失效机理.实验与理论分析结果表明,电流放大系数hFE是ESD、EMP损伤的敏感参数;在ESD、EMP的作用下,器件进入雪崩击穿状态(反偏注入),从而诱发热电子注入效应,使hFE逐渐退化;BC结反偏时的失效能量低于EB结反偏时的失效能量,BC结是EMP损伤的较易损端口;改进器件的结构设计、提高器件抗ESD、EMP能量,可有效提高电子装备抗电磁脉冲的可靠性水平.