电子束

E0 is the applied voltage to the electron beam and L the probed depth.

其中E0为施加到电子束上的电压，而L为探测深度

This paper discusses how the electron of the Linac can be used as the beam for radialion therapy after scattering and collimation.

文章阐明了如何将加速器的电子束经散射和准直以后成为放射治疗的医用射线束。

The influence of the process parameters on electron beam melting process is investigated and a mathematic model is set up by linear regression analysis.

研究了工艺参数对电子束熔融工艺过程的影响，采用线性回归分析建立了一个数学模型。

This p a per introduces a method of the electronic be a m flow controlling of the electron be a m welding m a chine by using V/F a nd F/V converter.

介绍把V/F及F/V转换器作为电子束焊机束流控制方式的研究，实现了焊接束流的快速控制，提高了电子束流的稳定性及可靠性。

Irradiated by microwave with different energies to the microbridge junction, up to 77k, a series of Josephson response steps have been observed.(8) By using trilayer resist exposure technique and a critical metal lift-off step, the mushroom gates with 0.15μm gate-length for 8-millimeter high electron mobility transistors have been successfully fabricated.

用直流磁控溅射的方法在ZrO〓基底上制备了YBaCuO超导薄膜，采用电子束／紫外混合曝光技术，首次制备得到桥宽小至0.15μm的微桥结，在液氮温度（77K）测得该微桥结的临界电流密度只有150μA，并在不同能量的微波辐照下，观察到该微桥结的交流I-V特性具有Josephson台阶效应。

CFEL's were compared with other similar devices such as cyclotron autoresonance masers and free-electron lasers in detail, which can also be operated in this portion of the spectrum. In the fourth chapter, a limitation was shown to be imposed on the power capacity and power output of a CFEL device at high frequency operation.

第四章分析了工作频率升高时契伦柯夫自由电子激光功率容量和输出功率受到的限制；为了解决这个问题，提出了多电子束契伦柯夫自由电子激光的概念并进行了理论研究。

Basing on the Monte-Carlo calculations of the detectors'responses to radiation and n/γdiscrimination ability, their radiation response properties are experimentally investigated on pulsedγrays, X rays from Z-pinch processes, n/X mixed radiation fields of the DPF neutron generator, electron beams of BEPC II Testing Beam Facility.

完成了探测器辐射响应、n/γ分辨能力的蒙特卡罗模拟计算，开展了探测器对脉冲γ射线、Z-pinch过程脉冲X射线、DPF装置脉冲中子/X射线混合场、BEPC II试验束装置脉冲电子束及国家串列加速器脉冲质子束的辐射响应实验研究。

The dissertation is concentrating on the topic of a high power, tunable, millimeter wave free electron laser. The tunable ability of the mm wave FEL is studied. FEL powers are improved by novel variable parameter wigglers. A high brightness electron beam is achieved for FEL. These technologies are very important for realization of high power compact free electron lasers.

本博士论文围绕高功率可调谐毫米波自由电子激光器的研究主题，研究毫米波自由电子激光的调谐特性，用新型磁场逐渐增强的摇摆器等手段提高自由电子激光的效率，研究体积小的高亮度电子束源用于自由电子激光，为研制新一代小型化高功率自由电子激光器提供关键技术。

The polarization spectrometer could measure X-ray lines radiated by plasma in the directions of vertical and horizontal.

为了研究等离子体各向异性及确定高温等离子体中电子束的存在，研制了X射线极化晶体谱仪，探讨了极化光谱学的理论，推演了X射线极化度的计算方法。

The blue circle oxide films on fuel rods near the welded zone by electron beam welding were formed after corrosion tests.

燃料棒电子束焊接试样腐蚀后，在近环焊缝区会出现蓝色氧化膜环现象。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。