Mechanisms affecting the speed and direction of vacuum arc cathode spots movement in a magnetic field

• Дата: 2023
• Автори: Vasyliev, V.V., Strel’nitskij, V.E.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2023
• Назва видання: Problems of Atomic Science and Technology
• Теми: Low temperature plasma and plasma technologies
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/196037
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Mechanisms affecting the speed and direction of vacuum arc cathode spots movement in a magnetic field / V.V. Vasyliev, V.E. Strel’nitskij // Problems of Atomic Science and Technology. — 2023. — № 1. — С. 92-97. — Бібліогр.: 23 назв. — англ.

Based on the known experimental and theoretical data, a new model of the plasma jet, which emit by cathode spot (СS) along the magnetic field proposed. According to this model, the plasma jet contains an oppositely directed current of accelerated ions of the cathode material with an excess positive charge and a current of accelerated electrons with an excess negative charge, between which an electric field of polarization of the plasma jet formed. Based on this model, the basic parameters of the plasma jet from the external parameters of the magnetic field, the arc current, and the average charge state of the ions calculated. The main mechanisms affecting the speed and direction of movement of the arc CS on the cathode end surface clarified for the first time.