The Dense Plasma Focus (DPF) devices PF-1000, PF-6 and PF-5M working with different gases and in dissimilar
irradiation modes were used to carry out experimental investigations of irradiation of a number of materials by
powerful pulsed ion and high-temperature plasma streams. The materials under test were designed for application in
structural and functional components of thermonuclear fusion devices with magnetic (MPC) and inertial (IPC) plasma
confinement, as well as for working chambers of plasma and accelerator devices. The main features of the materials are
low-activation and radiation-resistant properties. On the basis of the investigations a significant progress was achieved
in understanding of dynamics of high-energy nano- and micro-second pulsed streams in DPF from one side as well as
on the mechanisms of their influence upon materials under irradiation from the other one. We demonstrated that this
approach can be useful for certain tests of plasma-facing materials (e.g. W for MPC and stainless steels for IPC) and of
structural (construction) elements of the above-mentioned devices subjected to pulsed high-energy radiation streams.
The results obtained suggest also that DPF devices can be used in new pulse technologies for material treatment by
means of powerful nanosecond and microsecond pulses of plasma and ion stream
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