Measuring of spatio-temporal characteristics Z-pinch from deuterated polyethylene

• Published in: The European physical journal. D, Atomic, molecular, and optical physics Vol. 54; no. 2; pp. 499 - 502
• Main Authors: Akunets, A. A., Anan’ev, S. S., Bakshaev, Yu. L., Blinov, P. I., Bryzgunov, V. A., Chernenko, A. S., Dan’ko, S. A., Kazakov, E. D., Korolev, V. D., Meshcherov, B. R., Nedoseev, S. L., Pimenov, V. G., Smirnova, E. A., Ustroev, G. I., Vikhrev, V. V., Volobuyev, I. V., Zelenin, A. A.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.08.2009
• Subjects: Applications of Nonlinear Dynamics and Chaos Theory; Atomic; Molecular; Optical and Plasma Physics; Physical Chemistry; Physics; Physics and Astronomy; Quantum Information Technology; Quantum Physics; Spectroscopy/Spectrometry; Spintronics; Topical issue: 23rd Symposium on Plasma Physics and Technology; 52.58.Lq Z-pinches, plasma focus, and other pinch devices
• ISSN: 1434-6060; 1434-6079
• DOI: 10.1140/epjd/e2009-00111-0

On the S-300 installation at currents up to 2 MA with rise time 100 ns, the investigation of the formation process of high-temperature plasma in fast Z-pinch was carried out. The central part of the loads was made from agar-agar and represented a deuterated polyethylene cylinder with small density 50 and 75 mg/sm 3 and 1–2 mm diameter. On the ICT images, obtained in optical and soft X-ray range of a spectrum with 3–5 ns exposition, it is visible that on the axis of the polyethylene cylinder at the current`s rise time a cord is formed and it is separated into bright formations. They were observed on a background of a luminous area which occupied the initial neck volume. On time-integrated pinhole pictures obtained in SXR range (E > 1–4 keV), hot points with minimal size of 50 microns were registered. From the chronograms results, obtained by means of the optical high-speed-streak camera mount along the neck axis with time resolution < 1 ns, it follows that luminous formations arise sequentially during the different time moments (in 10–30 ns). Occurrence of luminous formations was accompanied by X-ray radiation occurrence with energy E > 1 keV with short duration of 2–4 ns. Simultaneously with X-ray radiation neutrons with the maximal yield of 4.5×10 9 were registered. The average energy measured in 4 directions under angles with an axis of: 0 ○ (above the anode), 90 ○ , 180 ○ (under the cathode) and 270 ○ , were accordingly: 2.4±0.2, 2.5±0.1, 2.5±0.1, 2.5±0.1 MeV.