Application of plasma focus installations for a study of the influence of deuterium cumulative flows on materials

Pramana

A A Tikhomirov¹  V Ya Nikulin¹  A I Dedyurin²  S N Polukhin¹  I V Borovitskaya²  L I Ivanov²  A S Fedotov³  O N Krokhin¹ 

[1] P.N. Lebedev Physical Institute of Russian Academy of Sciences, 119991, Leninsky prospect, 53, Moscow, Russia$$;A.A. Baikov Institute of Metallurgy of Russian Academy of Sciences, 119991, Leninsky prospect, 49, Moscow, Russia$$;Institute of the Theoretical and Experimental Physics, 117218, B. Cheremushkinskaya, 25, Moscow, Russia$$

关键词: Plasma focus;    z-pinch;    science material;    alloys of vanadium;    material for thermonuclear reactors;    plasma-material interactions.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

In this work, as an example of an application of the plasma focus (PF) device, we study the influence on alloys of vanadium of a cumulative flow producing in the PF device. The experiment was done in a 4-kJ PF device with various gas fillings and various anode shapes. It was found that the velocity of the axial cumulative flow depends on the type of gas and is about $5cdot 10^{7}$ cm/s for deuterium and $2cdot 10^{7}$ cm/s for argon fillings of plasma focus chamber; the shape of the flow is changed from a broad conical fly for deuterium to a quasi-one-directional stream for argon. The dynamics and structure of such flows are investigated by means of laser diagnostics and an image converter camera.The experiments show that cumulative flows produce various defects in tested samples. The appearance of a large number of cracks on the surface of vanadium under the impulse influence of deuterium plasma shows that pure vanadium cannot be used for the construction of thermonuclear fusion reactors.Such PF installations could also be used effectively for the study of other material and construction elements proposed for the use in thermonuclear machines.

【 授权许可】

Unknown