Вопросы атомной науки и техники, 2006, № 6

The formation of the low-sized high density plasma structures in the self-maintained plasma-beam discharge

2006-01-01T00:00:00Z

The formation of the low-sized high density plasma structures in the self-maintained plasma-beam discharge Borisko, V.N.; Tseluyko, A.F.; Zinov’ev, D.V.; Lazurik, V.T.; Tarasov, I.K. The opportunity of use self-maintained plasma-beam discharge in an extended pulsing plasma diode of low pressure for making powerful sources of the soft X-rays is investigated. Conditions of formation of the self-maintained plasmabeam discharge are determined. The mode of making of dense high-temperature plasma on the basis of stannum ions in the discharge is shown. The stannum ions are used as a working element of a radiation sources at pulsing power of electron beam Ɋ~10…100 MW. Results of the examination on formation of the dense (np~1016 cm 3 ), small sizes (l<1 cm) plasma with the electron temperature Ɍe~100 eV in conditions of working material evaporation from the anode are given. The total contribution of energy to the discharge has made W < 20 J.

Image quality as a possible method of in situ monitoring the in-vessel mirrors

2006-01-01T00:00:00Z

Image quality as a possible method of in situ monitoring the in-vessel mirrors Konovalov, V.G.; Makhov, M.N.; Shapoval, A.N.; Ashikawa, N.; Masuzaki, S.; Sagara, A.; Naidenkova, D.I.; Ryzhkov, I.V.; Shtan, A.F.; Solodovchenko, S.I.; Voitsenya, V.S. The plasma facing mirrors (FM) in ITER will be subjected to sputtering and / or contamination with the rates depending on mirror locations. The result of influence of both these factors will be reduce of mirror reflectance (R) and worsen the quality of transmitted image (IQ). This implies that control of the mirror quality in- situ is an actual problem, and this work is an attempt to approach to its solution. The method suggested for evaluation of IQ was applied to mirrors exposed in LHD, TRIAM-1M, TS and in the DSM-2 stand (IPP NSC KIPT).

The analysis of turbulence and rotation U-3M torsatron plasma during transport barriers formation

2006-01-01T00:00:00Z

The analysis of turbulence and rotation U-3M torsatron plasma during transport barriers formation Burchenko, P.Ya.; Kulaga, A.Ye.; Lozin, A.V.; Ocheretenko, V.L.; Pinos, I.B.; Pavlichenko, O.S.; Prokopenko, A.V.; Slavnyj, A.S.; Tarasov, M.I.; Tsybenko, S.A.; Skibenko, A.I. The analysis of plasma density oscillations and E×B rotation of U-3M torsatron plasma was performed by UHR correlation reflectometry during the transport barrier formation. The connections between these characteristics and the phenomenon of inner and edge transport barrier formation were determined experimentally at the different values of HF power and plasma density

Laser Thomson scattering diagnostics - developments and applications to high-temperature plasmas and plasmas for industrial applications

2006-01-01T00:00:00Z

Laser Thomson scattering diagnostics - developments and applications to high-temperature plasmas and plasmas for industrial applications Muraoka, Katsunori Laser Thomson scattering was applied to plasma diagnostics almost as soon as laser was invented in 1960. The most important contribution of the technique to plasma physics and controlled fusion came from the confirmation of good confinement of plasmas in the T-3 tokamak in 1968, by a collaboration of Russian and British physicists. Since then, extensive developments of the technique have been made to meet various measurement requirements, not only in hightemperature plasmas but in plasmas for industrial applications. In this article, these developments are briefly reviewed, followed by the work of the author and its implications for understanding various plasma phenomena.