Work

Cascade acceleration of an explosive-emission subnanosecond electron beam

Year: 2025

Type: article

Abstract: Cascade acceleration of a magnetized high-current subnanosecond electron beam (≈15 kA/cm2) has been demonstrated in two gaps separated by a drift tube. Synchronized negative-polarity voltage pulses of approximately the same amplitude (≈200 kV) were supplied to the gaps from autonomous high-voltage pulse generators. The pulse durations (1 and 0.5 ns) were determined by the accuracy of their synchronization (±200 ps). After passing through foil filters of different thickness (i.e., cutoff energy), the beam electrons were detected by a picosecond resolution collector sensor. It was found that the kinetic energy of the subnanosecond fraction of a tubular beam with a current of ≈1.2 kA, accelerated to 250 keV in the first gap with an explosive-emission cathode, increased to ≈500 keV at the output of the second gap.

Source: Physics of Plasmas

DOI: 10.1063/5.0257386

Authors: L. N. Lobanov, A. G. Sadykova, K. A. Sharypov, V. G. Shpak, S. A. Shunailov, M. I. Yalandin

Institutions: Institute of Electrophysics, P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Language: English

Topic: Pulsed Power Technology Applications

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Funder: Russian Science Foundation

Award: G3413325453