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- electron emission current 电子发射电流
- The hydrogen in the gauge is ionized by electron emission from a heated cathode. 在离子计内的氢气是用一个加热阴极放射电子来电离的。
- A carbon nanotube cathode with high emission current has been fabricated with the screen printing method. 研究了利用丝网印刷法制备碳纳米管阴极,以获取很大的发射电流。
- Experimental results show that CP can effectively activate such FEC's for electron emission. 实验结果表明,CP能有效激活长时间存放于恶劣环境的FEC的电子发射;
- The molecular effect [R(Yf)] in the forward electron emission decreases with target thickness at a certain energy. 前向发射产额的分子效应R(Yf),在给定的能量下随靶厚增加而下降。
- The dependence of the field emission current on the applied voltage approximately followed the Fowler-Nordheim (F-N) theory. 场发射电流与电压关系符合Fowler-Nordheim(F-N)理论。
- Preparation and field electron emission of diamond films grown on porous silicon substrates by MW-CVD are studied. 研究了多孔硅衬底微波CVD金刚石薄膜的制备工艺及其场电子发射特性。
- The field emission triodes with nanodot emitters exhibited a low gate turn-on voltage of 45 V and high emission current density of 25 mA/cm2 at 120 V. 此场效发射三极体拥有45伏特之低闸极启始电压,且在120伏特的闸极电压下,场效发射电流密度高达25毫安培/平方公分。
- A twodimensional model was used to simulate the processes of electron emission and beam transportation. 建立了二维数字模型,并对注入器的电子发射和束流传输过程进行模拟,模拟结果指导了实验调试。
- Numberical smiulation is made.Its result is agreement with that of field electron emission experiment. 当考虑到发射体表面的原子级不平整对电场的影响时,利用公式计算的结果与实验结果基本符合。
- Intermingle CaO in electronic emission materials can reduce the evaporation of BaO and increase the emitting electric current. 电子发射材料的组份和质量关系到钨阴极的寿命和支取的电流密度。
- Abstract: In this paper, the beam dynamics in micro-pulse electron gun (MPG) is studied using SEEG (Secondary Electron Emission Gun) program. 摘 要: 利用SEEG程序模拟计算了微脉冲电子枪束流动力学问题。
- Furthermore, a field emission triode device using the self-organized nanodot arrays as electron emission source was proposed and fabricated. 本研究亦利用奈米点作为电子发射源制作场效发射三极体元件。
- As compared with amorphous diamond on Si, the reduction of the applied electric field for the electron emission can be effectively improved by using Sm/ amorphous diamond contact. 我们发现非晶钻石长在镀钐的硅基板比单纯长在硅基板上的场发射特性更好,主要是因为金属有相对较低的功函数,可以降低金属/石接面的位障高度。
- We suggest that as lead-free cathode materials, BNBT and BT outweigh PZT from environmental consideration in spite of the fact that the field emission current density of PZT is slightly higher than that of both BNBT and BT. 结果认为:锆钛酸铅材料的电子发射电流密度略优于其他两种材料,但从无铅化角度来讲,钛酸钡与钛酸铋钠材料将有望取代现有的锆钛酸铅铁电阴极材料。
- It was concluded that charge injection and recombination would restrict the field electron emission, and increase the threshold voltage of flashover and decrease its scattering. 发生在绝缘体表层的电荷注入和复合过程能够在一定程度上抑制场致电子发射,从而提高沿面闪络电压,并降低闪络电压值的分散性。
- The mechanism to produce HCPEB was discussed in detail.The electron gun can be divided into explosive electron emission (EEE), anode plasma (AP) and oriented magnetic field. 电子束产生部分由爆炸电子发射阴极、等离子体阳极及导向磁场构成。
- inflection point emission current 拐点发射电流
- Same as working under single pulse mode, velvet can emit intensive electron beams too under multi-pulse mode and electron emission density is up to 100A/cm~2. In the experiment, phenomena of emitting non-uniform and instability are observed. 在猝发多脉冲工作模式下,天鹅绒阴极仍具有强流发射能力,发射电流密度可以达到100A/cm~2。
- thermoelectronic emission current 热电子发射电流