High-resolution X-ray projection radiography of a pin cathode in a high-current vacuum diode using X-pinch radiation


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To study processes in a high-current vacuum diode with a cathode in the form of a single pin made of a metallic wire 20–30 μm in diameter, the method of high-resolution projection X-ray radiography with an X-pinch as a source has been used. A strong inhomogeneity of the energy contribution to the wire has been revealed. The smallest energy release has been observed near the end of the pin, where the electric field strength is maximal. Hard X rays, as well as the ejection of matter from the anode, have been observed, indicating the generation of an electron beam with the parameters characteristic of explosive electron emission in the diode with this configuration. The data obtained indicate complex processes occurring in the diode. Possible scenarios of their development have been considered.

作者简介

E. Parkevich

Lebedev Physical Institute; Moscow Institute of Physics and Technology

编辑信件的主要联系方式.
Email: v754@rambler.ru
俄罗斯联邦, Leninskii pr. 53, Moscow, 119991; Institutskii per. 9, Dolgoprudnyi, Moscow region, 141700

I. Tilikin

Lebedev Physical Institute

Email: v754@rambler.ru
俄罗斯联邦, Leninskii pr. 53, Moscow, 119991

A. Agafonov

Lebedev Physical Institute; National Research Nuclear University MEPhI

Email: v754@rambler.ru
俄罗斯联邦, Leninskii pr. 53, Moscow, 119991; Kashirskoe sh. 31, Moscow, 115409

T. Shelkovenko

Lebedev Physical Institute

Email: v754@rambler.ru
俄罗斯联邦, Leninskii pr. 53, Moscow, 119991

V. Romanova

Lebedev Physical Institute

Email: v754@rambler.ru
俄罗斯联邦, Leninskii pr. 53, Moscow, 119991

A. Mingaleev

Lebedev Physical Institute

Email: v754@rambler.ru
俄罗斯联邦, Leninskii pr. 53, Moscow, 119991

S. Savinov

Lebedev Physical Institute

Email: v754@rambler.ru
俄罗斯联邦, Leninskii pr. 53, Moscow, 119991

G. Mesyats

Lebedev Physical Institute

Email: v754@rambler.ru
俄罗斯联邦, Leninskii pr. 53, Moscow, 119991

S. Pikuz

Lebedev Physical Institute

Email: v754@rambler.ru
俄罗斯联邦, Leninskii pr. 53, Moscow, 119991

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