Observation of copper atoms behavior in a vacuum arc discharge using laser spectroscopy

Autor:	Y. Hayashi, Yaw Okraku-Yirenkyi, Tatsuya Sakoda, Youl-Moon Sung, Chikahisa Honda, Masahisa Otsubo
Rok vydání:	2003
Předmět:	Quantitative Biology::Neurons and Cognition Chemistry Charge coupled device camera Surfaces and Interfaces Vacuum arc Condensed Matter Physics Cathode Surfaces Coatings and Films Anode law.invention Electric arc Physics::Plasma Physics law Excited state Ionization Electrode Atomic physics
Zdroj:	Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 21:180-185
ISSN:	1520-8559 0734-2101
DOI:	10.1116/1.1531141
Popis:	In order to investigate the most important parameters influencing the breaking characteristic of a vacuum circuit breaker (VCB), the behavior of copper (Cu) particles emitted from electrodes designed as an imitation of a vacuum valve of the VCB was observed. The temporal-spatial intensity distributions due to Cu particles in an excited state or a neutral state were measured using the laser induced fluorescence (LIF) technique and a charge coupled device camera attached with a special filter. The diffusion velocity of a Cu atom was also investigated by evaluating a Doppler shift of the LIF signal. The results showed that most Cu particles were emitted from the anode and were in an excited state or an ionized state during an arc discharge. Also, Cu particles were distributed between electrodes even after the discharge chocked, and its diffusion velocity in the direction of the cathode from the anode was about 2.6 km/s.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b54d2d2879b1783083c006f578ce8355 https://doi.org/10.1116/1.1531141 Zobrazit plný text záznamu