The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Summary form only given. Post-hole convolutes are used to combine the current from several magnetically insulated transmission lines into one anode-cathode gap. The post-hole convolute geometry produces a complex magnetic field, which can contain several magnetic nulls. Electron flow in the post-hole region can cross the anode-cathode gap, which can produce plasma and lead to further current losses...
A magnetohydrodynamic model of irradiating Z-pinch is the basis of a 2-D (in Euler cylindrical coordinates r-z) computer code FLUX-rz developed in VNIIEF (Russia). Earlier, the code considered the thermal radiation transfer in one-group (gray) diffusion approximation. This paper presents a modification of the FLUX-rz code in which we realized a multigroup diffusion model of the radiation transfer...
Summary form only given. At the Kurchatov Institute, the series of ICF experiments is carried out on the S-300 pulsed power generator. In this talk, the experimental results are presented related to the study of operation of co-axial magnetically self-insulated transporting line (MITL), by the linear current flow density on the inner electrode surface up to iap 7 MA/cm (j > 500 MA/cm2). The specific...
Summary form only given. The paper presents simulation results of a Z-pinch experiment shot 51 using numerical code FLUX-rz, developed in STCP RFNC-VNIIEF. Calculations of an implosion process of a tungsten liner load were carried out with stationary uniform Eulerian grid in frameworks of a two-dimensional (in r-z plane) radiation magnetic hydrodynamics at self-consistent consideration of equations...
Summary form only given. Tailoring the radial density profile of gas loads on radiation simulators is expected to increase the X-ray yield by mitigating the adverse effects of the Rayleigh-Taylor instability on axial uniformity of the current carrying sheath during the implosion phase of the load. Multi-shell gas puff loads, with and without on axis jets, have been studied to achieve this objective...
Summary form only given. This paper investigates the dense plasma focus (DPF) for applications in space plasma physics. The plasma focus (a variant of Z-pinch) generates plasmas from fast high voltage electrical discharges on coaxial electrodes suitable for very different studies: from fusion up to plasma space modeling. In particular, the plasma sheath of the DPF is here studied and measured in some...
Summary form only given. Results are presented from a compact X-pinch pulser (I~80 kA, risetime ~40 ns). Various wire materials, (tungsten, molybdenum, nickel, stainless steel, and aluminum), number of wires, (2, 3, 4), and thickness (from 5 mum-13 mum) were used. The overall mass per unit length was kept constant. A variety of diagnostics including, laser probing, X-ray framing camera, a set of seven...
Summary form only given. The X-pinch plasma has established itself as an extraordinarily useful tool for studying the dynamics and kinetics of hot, dense plasmas as well as for high resolution imaging. An X-pinch plasma is formed when two or more fine wires, which cross at a point to form an "X," are used as the load of a pulse power machine. When this configuration is exploded to form a...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.