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2 Nukleonika

2 2001

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Investigation of the pulse plasma stream

Evtikhin V. A., Lyublinsky I. E., Vertkov A. V., Ivanov L. I., Ivanov Y. P., Krokhin O. N., Nikulin V. Y., Polukhin S. N., Safronova T. V., Tikhomirov A. A.

Nukleonika

2001

Vol. 46, suppl. 1

113--115

In this report we present a first series of tests of the lithium Capillary Porous System (CPS). We suppose that such a system can be used as a first wall in a thermonuclear reactor. The main goal of the presented work was to study the behavior of the lithium CPS in the condition simulating the influence of plasma in various operating regimes of the thermonuclear reactor. The tests were conducted in a Plasma Focus (PF) installation. The preliminary analysis of the received results confirms the high resistance of the lithium CPS to the pulse influence of plasma flows.

0.2-kJ and 2-kJ high rep rate Dense Plasma foci : their design, technology, and applications

Dubrovsky A. V., Gribkov V. A., Ivanov Y. P., Lee P., Lee S., Liu M., Samarin V. A.

Nukleonika

2001

Vol. 46, suppl. 1

107--111

The paper presents various designs of several medium and small size Dense Plasma Focus (DPF) chambers intended for numerous applications, a description of technologies used in these facilities, and some results reached with these devices by using a number of diagnostic techniques. In present experiments the DP foci have been used mainly as an X-ray source. We discuss here how it is possible to satisfy absolutely new and very strict demands on the construction and technology for the devices to be eventually applied in science and industry. Between these characteristics there are a high repetition rate (typically 1…15 Hz) and a long lifetime (over 1 million shots). Their switching elements, a collector and chambers must withstand a high quasi-continuous heat load (up to 100 kW). High energy density in the central part of the chamber anode and the necessity to provide a channel for radiation extraction demanded a special construction and specific materials implementation in this region. Their X-ray spectrum should be tuned. They have to operate with different working gases and preferably in a wide range of pressures. All these points are discussed in this report. Capabilities of the described techniques are illustrated by results of the recent experimental studies carried out with facilities located at the Nanyang Technological University (NX1) as well as at the Lebedev Physical Institute (PF-0.2).