hollow cathode discharge tube

简明释义

空心阴极放电管

英英释义

例句

1.We observed that the efficiency of the hollow cathode discharge tube improved with increased gas pressure.

我们观察到，随着气体压力的增加，空心阴极放电管的效率得到了提高。

2.The researchers used a hollow cathode discharge tube to generate a stable plasma for their experiments.

研究人员使用了一个空心阴极放电管来产生稳定的等离子体进行实验。

3.In our lab, we have several hollow cathode discharge tubes for spectroscopic analysis.

在我们的实验室里，我们有几个空心阴极放电管用于光谱分析。

4.The hollow cathode discharge tube is essential for producing high-intensity light in gas lasers.

在气体激光器中，空心阴极放电管对于产生高强度光是必不可少的。

5.The design of the hollow cathode discharge tube allows for better electron confinement.

空心阴极放电管的设计允许更好的电子束限制。

作文

The study of plasma physics and its applications has led to the development of various devices that utilize the properties of ionized gases. Among these devices, the hollow cathode discharge tube stands out due to its unique design and functionality. A hollow cathode discharge tube (空心阴极放电管) is a type of gas discharge tube that features a hollow cathode, which allows for efficient electron emission and ionization of the surrounding gas. This design is particularly advantageous in creating stable and sustained plasma conditions, making it suitable for a range of applications including lighting, spectroscopy, and thin-film deposition. In a hollow cathode discharge tube, the cathode is typically made of a metal that can easily emit electrons when a voltage is applied. The hollow structure allows the emitted electrons to collide with the gas atoms within the tube, leading to ionization. As more electrons are emitted, a cascade effect occurs, resulting in a large number of ions and free electrons, which collectively form a plasma. The stability of this plasma is crucial for many applications, as it provides a consistent source of light or energy.One of the most common uses of the hollow cathode discharge tube is in gas lasers. In these lasers, the plasma generated within the tube can produce coherent light through stimulated emission. The efficiency of the hollow cathode discharge tube in maintaining a stable plasma makes it an ideal candidate for laser applications, where precise control over the output is necessary.Another significant application of the hollow cathode discharge tube is in analytical chemistry, particularly in techniques such as atomic emission spectroscopy. Here, the tube serves as a source of excitation for the sample being analyzed. When the sample is introduced into the plasma, it absorbs energy and emits light at characteristic wavelengths, allowing for the identification and quantification of elements present in the sample. The ability of the hollow cathode discharge tube to produce a uniform and stable plasma enhances the sensitivity and accuracy of these measurements.Moreover, in the field of materials science, hollow cathode discharge tubes are used in physical vapor deposition processes. This technique involves the deposition of thin films onto substrates, which is essential for creating coatings with specific properties. The plasma generated in the hollow cathode discharge tube facilitates the evaporation of the material, allowing it to condense on the substrate in a controlled manner. This application is vital in industries such as electronics, optics, and protective coatings.In conclusion, the hollow cathode discharge tube (空心阴极放电管) is a remarkable device that plays a crucial role in various scientific and industrial applications. Its ability to generate stable plasma through its unique hollow cathode design opens up numerous possibilities in fields ranging from laser technology to analytical chemistry and materials science. As research continues to advance, the potential applications of the hollow cathode discharge tube are likely to expand further, contributing to technological innovations and improvements in various sectors.