Investigation of x-ray emission from high-current discharges of the PF type

• Дата: 2016
• Автори: Skladnik-Sadowska, E., Sadowski, M.J., Malinowsk, K., Surala, W., Zaloga, D., Paduch, M., Zielinska, E., Tomaszewski, K.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2016
• Назва видання: Вопросы атомной науки и техники
• Теми: Plasma dynamics and plasma-wall interaction
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/115330
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Investigation of x-ray emission from high-current discharges of the PF type / E. Skladnik-Sadowska, M.J. Sadowski, K. Malinowski, W. Surala, D. Zaloga, M. Paduch, E. Zielinska, K. Tomaszewski // Вопросы атомной науки и техники. — 2016. — № 6. — С. 112-116. — Бібліогр.: 19 назв. — англ.

The invited paper reports on measurements of soft x-rays emitted from hot plasmas produced in a modernised PF-1000U facility. The discharges were performed at the D2-filling with or without a Ne-admixture, under the initial pressure of 0.9 or 1.5 Torr and at the initial charging voltage equal to 16 or 18 kV. Time-integrated x-ray images were recorded with a pinhole camera situated side-on, at an angle of 75º to the z-axis. Differences in the pinch column structure were observed. Time-resolved measurements were performed with four PIN diodes located behind filtered pinholes. Two couples of PIN diodes (with Be-filters of 7 and 10 μm in thickness) observed 30 mm-diam. regions which had centres at a distance of 30 and 60 mm form the electrode outlets. From the recorded timeresolved x-ray signals the electron temperatures (Te) were calculated. For the pure D2-discharges the estimated Te values ranged from 75 to 250 eV depending on the discharge conditions. For discharges with a Ne-admixture Te values were higher and reached about 800 eV.