Creation Of A Microplasma Using A Hairpin Resonator

The purpose of this thesis is to design a new device to produce a microplasma and study its discharge characteristics. A typical microplasma is no more than 1 mm in scale, far less than traditional plasma, so it has many new properties. The microplasma also has many potential applications, such as bio-medicine, micro-machining, UV lighting source, etc.. Because of the two points above, a microplasma has obtained wide attention in recent years. This work creates a hairpin resonator, which can produce a 1-mm microplasma at atmospheric pressure, in air or rare gas. The microplasma generated in argon shows a spatial pattern, which varies with the power. Using a two-dimensional spatially resolved optical system, the microplasma was investigated and is spectra lines were recorded by a electrical multiplied CCD. With a collisional-radiative model in atmospheric-pressure argon, the distributions of high-energy and low-energy electrons have been obtained. As a result, it is found that high-energy electrons have a pattern-like distribution, while low-energy electrons have a uniform distribution. This result was firstly observed.