热阴极

Large current hot cathode glow discharge was used for plasma chemical vapor deposition of diamond films. It improved deposition rate and films quality efficiently.

大电流热阴极辉光放电用于等离子体化学气相沉积金刚石膜，有效地提高了沉积速率和膜品质。

This paper studies depression in the hot cathode glow discharge PCVD method of diamond films influence in the process, mainly from two aspects of research: a study of the process of discharge pressure of the impact of that pressure on the technology, the impact of state discharge , as well as pressure and discharge voltage of the relationship between the two, and experiment with different pressure, relative to the preparation of samples, and using Raman instrument and SEM analysis of the quality of the film, by comparing the different types of gas pressure on the quality of diamond films, summed up the most good gas pressure parameters of a high-quality diamond films.

本文研究气压在热阴极辉光放电PCVD方法制备金刚石膜过程中的影响，主要是从两个方面进行研究：一，研究制备过程中气压对放电的影响，得出气压对工艺，放电状态的影响，以及气压和放电电压的关系；二，采用不同气压进行实验，制备出相对应的样品，并用Raman和SEM等仪器对膜进行质量分析，通过对比不同气体压强对金刚石膜质量的影响，总结最佳气体压强参数，制备出高品质金刚石膜。

The plasma source ion implantation device consists of pulsed negative high voltage power, hot cathode arc discharge system, vacuum chamber and target stage, vacuum system and monitor system.

等离子体源离子注入装置由脉冲负高压源系统、热阴极弧放电系统、真空室及样品台、真空系统和监测系统等五部分组成。

The residual gas pressure in an electron tube can be measured when the tube itself is operated as a hot cathode ionization gauge.Usually,its sensitivity K is determined by the method of gauge calibration.In this paper,author try to determine the sensitivity K by ca- lculation.The formulae for this purpose have be found out,and are used for both plate and cylindrical electrode systems.

把电子管接成热阴极电离计的工作形式，用来测量管内残气压强时，其灵敏度如何计算的问题在本文中作了讨论，给出了平板形电极系统和圆柱形电极系统的灵敏度解析式，对式中各量的计算作了详细介绍；并指出四极管中电子在电离区的平均渡越次数的表示式与三极管中的完全不同。

The thermionic emission properties of rare earth doped molybdenum cathode and impregnated cathode with sub-micron scandia doped tungsten matrix, and the secondary emission property of rare earth doped molybdenum cathode have been studied in this paper.

研究了稀土钼阴极的热发射、次级发射及亚微米结构钪钨基扩散阴极的热发射性能。

In electronics, a vacuum tube or thermionic valve or just valve, is a device generally used to amplify, switch or otherwise modify, a signal by controlling the movement of electrons in an evacuated space.

真空管是一种电子设备，由抽真空的容器组成，它具有发射电子的阴极（旁热式是由灯丝加热，直热式则灯丝就是阴极）和工作时通常加上高压的阳极。阴极和阳极之间，自阴极算起，第一个电极称为栅极，再增加一个电极则称为帘栅极。

B and D of a multi-cavity RF gun with thermionic cathode for BFEL.

用于BEFL的多腔热阴极微波电子枪的设计研究。

A diode-type electron gun is used to investigate the DC emitting characteristics of a single crystal LaB6 thermionic cathode.

实验利用二极管型电子枪研究了单晶LaB6热阴极的直流发射特性。

The BEPCⅡ future pre-injector consists of a thermionic gun followed by two subharmonic bunchers, a travelling wave prebuncher and a travelling wave buncher.

BEPCⅡ未来的预注入器由热阴极电子枪、两个次谐波聚束器、行波预聚束器以及行波聚束器组成。

This paper discusses how to use a quadrupole mass spectroscope to analyzed the whole process of thermal cleaning before the activeness of GaAs photocathode,thus the temperature and technique of the optimal thermacleaning is determine.

本文采用四极质谱仪对GaAs光电阴极激活前的热清洗过程进行分析。确定了最佳的热清洗温度及热清洗工艺，较好地解决了GaAs光电阴极激活前的热清洗工艺问题。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。