Study of vacuum high-gradient breakdowns from the ion-modified surface of copper electrodes

• Дата: 2023
• Автори: Baturin, V.A., Karpenko, A.Yu., Lebedynskyi, S.O., Roenko, O.Yu., Eryomin, S.O., Novak, O.P., Kholodov, R.I.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2023
• Назва видання: Problems of Atomic Science and Technology
• Теми: Linear charged-particle accelerators (theory and technology)
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/196150
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Study of vacuum high-gradient breakdowns from the ion-modified surface of copper electrodes / V.A. Baturin, A.Yu. Karpenko, S.O. Lebedynskyi, O.Yu. Roenko, S.O. Eryomin, O.P. Novak, R.I. Kholodov // Problems of Atomic Science and Technology. — 2023. — № 3. — С. 103-107. — Бібліогр.: 8 назв. — англ.

The influence on the resistance to high-voltage breakdown of samples irradiated with double-charged copper ions Cu²⁺ with an energy of 300 keV and different irradiation doses was studied. It is experimentally shown that when irradiating a copper electrode with Cu²⁺ ions, the values of breakdown characteristics improve by 17…28% with increasing irradiation dose. A theoretical study of the effect of material defects such as pores on the emission current was carried out. It is shown that the field emission current from the metal surface near nano-objects has a vibrational resonance feature. The resonance condition is determined by the depth of the nanoscale void from the metal surface. If the resonance conditions are not met or if the size of the defects increases, the emission current decreases rapidly.