In this article, we offer a look inside our prototype compact X-ray tube by reporting on our findings when we experimentally studied it. We studied the prototype experimentally to characterize its primary components, i.e., carbon nanotube (CNT)-based cold cathode, electrostatic lens and transmission-type anode, and to validate our previous simulation studies. We characterized the CNT-based cold cathode by studying the relationship between the electron emission current and its control parameter, electron extraction voltage. This relationship, commonly known as the current-voltage characteristic, showed an exponential-like nature that is expected from the Fowler-Nordheim model for field emission. Next, we characterized the electrostatic lens by studying the effects of lens voltage on the focal spot size. Their relationship showed a "V" trend and corroborated that we can control the focal spot size by controlling the lens voltage. We then characterized the transmission-type anode of the prototype by studying its output X-ray energy spectra at different anode voltages. We could control the highest and the mean X-ray energies generated from the transmission-type anode using the anode voltage. For the same anode voltage and aluminum filtration, when we compared the Xray energy spectrum generated from the transmission-type anode with that of the conventional reflection-type anode, we observed that the two energy spectra agreed with each other.

中文翻译：

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观察包含CNT基冷阴极和透射型阳极的紧凑型X射线管原型。

在本文中，我们将通过实验研究报告我们的发现，从而为我们的紧凑型X射线管原型提供一个外观。我们通过实验研究了原型，以表征其主要成分，即基于碳纳米管（CNT）的冷阴极，静电透镜和透射型阳极，并验证了我们之前的仿真研究。通过研究电子发射电流与其控制参数电子提取电压之间的关系，我们对基于CNT的冷阴极进行了表征。这种关系通常称为电流-电压特性，显示出Fowler-Nordheim模型用于场发射的指数状性质。接下来，我们通过研究透镜电压对焦点尺寸的影响来表征静电透镜。他们的关系显示为“ V” 趋势并证实我们可以通过控制透镜电压来控制焦斑大小。然后，我们通过研究在不同阳极电压下其输出X射线能谱来表征原型的透射型阳极。我们可以使用阳极电压控制透射型阳极产生的最高X射线能量和平均X射线能量。对于相同的阳极电压和铝过滤，当我们比较透射型阳极产生的X射线能谱和常规反射型阳极产生的X射线能谱时，我们发现这两个能谱彼此一致。我们可以使用阳极电压控制透射型阳极产生的最高X射线能量和平均X射线能量。对于相同的阳极电压和铝过滤，当我们比较透射型阳极产生的X射线能谱和常规反射型阳极产生的X射线能谱时，我们发现这两个能谱彼此一致。我们可以使用阳极电压控制透射型阳极产生的最高X射线能量和平均X射线能量。对于相同的阳极电压和铝过滤，当我们比较透射型阳极产生的X射线能谱和常规反射型阳极产生的X射线能谱时，我们发现这两个能谱彼此一致。