电子束

The method comprises:(1) weighing lead acetate hexahydrate and thioacetamide, and preparing aqueous solutions respectively, so that the concentration ratio of Pd2+ to S is 1:(1-4);(2) adding acetic acid into thioacetamide solution to adjust the pH value to 2-4;(3) adding poly surfactant into lead acetate solution, ultrasonicating to mix uniformly and obtain a colorless and transparent sol;(4) mixing the sol and thioacetamide solution;(5) placing the mixed solution in a sealed container, irradiating by 2.5 MeV and 40 mA electron accelerator with irradiation dose of 25-40 Mrad;(6) washing the product, centrifuging for separation, and drying to obtain black PdS nanoparticles.

本发明方法的工艺过程如下：首先称取一定量的六水合醋酸铅和硫代乙酰胺，各自配制成水溶液，其浓度比为使其中的铅离子浓度与硫原子浓度的比例为1∶1～1∶4；在硫代乙酰胺溶液中加入适量醋酸调节其pH值至2～4；醋酸铅溶液中加入少量表面活性剂聚乙烯醇，然后超声振荡，混合均匀，制成无色透明溶胶；随后将溶胶与上述的硫代乙酰胺溶液混合；将该混合液置于密闭容器中，并将其放置于2.5MeV、40mA的电子加速器产生的电子束辐照下进行辐照处理，其辐照剂量为25～40Mrad；然后将反应生成物清洗，并用高速离心机离心分离，然后干燥，最终得到黑色纳米硫化铅颗粒。

Objective: To evaluate the effect of different sized block on high electron beam.

目的：研究不同大小射野挡铅对高能电子束射野输出剂量的影响，并讨论不同源皮距的变化规律。

A high beam energy is also used to stimulate x-ray emission of higher-energy peaks.

高能量电子束也能用来激发高能量x射线峰的发射。

Maintain deflector if the size of the same voltage, the voltage change is accelerating, we can see a very accelerated voltage reduce, electron beam deflection angle instead of increasing, it is because of low accelerating voltage, the electron velocity smaller horizontal direction, electronic deflection plates in the field of the role of the extended time, the angle of deflection increases .

如果保持偏转板的电压大小不变，改变加速极的电压，可以看到加速极的电压减小，则电子束偏转的角度反而增大，这是因为加速极电压低，则电子的水平方向速度变小，电子在偏转板中受电场力作用的时间加长，所以偏转的角度增大。

HCD is a thin film deposition process based on hollow hot cathode ion-electron beam and ion plating techniques.

空心阴极放电离子镀技术，是在空心热阴极离子电子束技术和离子镀技术的基础上发展起来的一种薄膜沉积工艺。

Based on the electron gun of SDS-3 electron beam lithography machine,the concave hyperboloid Wehnelt(oxide-coated cover)of accelerator is discussed.

以SDS-3电子束设备的电子枪为基础，讨论了双曲凹面加速器维纳尔的电子轨迹与能量分布。

It discusses various voltage contrast methods, and introduces a new method, that is called electron beam induced voltage contrast method.

本文讨论了各种电压衬度法，也叙述了一种新的电压衬度法，称它为电子束感生电压衬度法。

Property comparison of optical thin films prepared by E-beam,ion assisted deposition and ion beam sputtering.

电子束、离子辅助和离子束溅射三种工艺对光学薄膜性能的影响。

Howard Orville publicly stated in 1958 that the intent was "to manipulate the charges of the earth and sky and so affect the weather through electronic beams to ionize and de-ionize the atmosphere".

上尉霍华德奥维尔公开声明，在1958年的意图是"操纵的收费地球和天空等影响天气透过电子束，以电离和德-电离的气氛"。

The photoelectron gun was not separated from the ionizer of the TOFMS completely, thus the energy of the photoelectron beam could not be adjusted independently.

但他们所用方法都有一个共同的缺陷，即没有将光电子枪与TOF质谱的离化器完全分离，光电子束能量不能独立调节。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。