Studies on a low energy plasma focus discharge

• Autorzy: Allam T. M. , Abd El-Latif S. T. , Soliman H. M.
• Języki publikacji: PL

Abstrakty

EN

This paper is devoted to the experimental and theoretical study of plasma current sheath behavior for a low energy plasma focus device operating at a filling nitrogen gas pressure of 3.3 torr, and at a stored energy of 1.2 kJ. Axial distribution profiles of plasma current sheath (PCS) characteristics such as propagation velocity Vz, acceleration az, azimuthal magnetic field induction Btheta, and magnetic force per unit volume Fz/m3 along the coaxial electrodes system was performed from a magnetic probe and miniature Rogovsky coil signals. The experimental results showed that the axial distribution of Vz, az, Btheta and Fz has approximately the same profile and the maximum value of these parameters was detected nearly at a mid-distance of coaxial electrodes system. Theoretical description of PCS dynamics at the axial phase, based on a snowplough, was estimated as a function of discharge time. These data were compared with the received experimental results.

Słowa kluczowe

EN

plasma focus; plasma sheath dynamics; magnetic force; focusing action

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2007
• Tom: Vol. 52, nr 3
• Strony: 87--91
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Allam T. M.

autor

Abd El-Latif S. T.

autor

Soliman H. M.

• Plasma Physics and Nuclear Fusion Department, Nuclear Research Center, Atomic Energy Authority, Inshas, Abo-Zabal, P. O. Box 13759, Cairo, Egypt, Tel.: [phone], Fax: [phone],

Bibliografia

• 1. El-Kashef GM, Soliman HM (2003) Magnetic forces distribution in 4.4 kJ plasma focus device. In: Proc of the 1st Cairo Conf on Plasma Physics and Application CCPPA 2003, Cairo, Egypt 34:166−169
• 2. Mathuthu M, Zengeni TG, Gholap AR (1996) Measurement of magnetic field and velocity profiles in 3.6 kJ.United Nations University/International Center for Theoretical Physics Plasma Focus Fusion Device. Phys Plasma 3:4572−4576
• 3. Nikulin VYa, Krokhin ON, Gurei AE, Polukhin SN, Tikhomiror AA (2001) Investigation of cumulative flows in plasma focus. In: Proc of the Int Symp Research and Application of Plasmas, Warsaw, Poland 1:72−76
• 4. Silva P, Soto L, Moreno J et al. (2001) Characterization of a very small plasma focus in the limit of low energy.In: Proc of the Int Symp Research and Application of Plasmas, Warsaw, Poland 563:235−239
• 5. Soliman HM, El-Kashef GM, Masoud MM (1994) Coaxial discharge and transverse magnetic field. Plasma Phys 34:587−591
• 6. Tsagas NF, Mair GLR, Prinn AE (1978) Motion and shape of snowplough sheets in coaxial accelerators. Phys D 11:1263−1272