Magnetic Nozzle Device
Magnitized plasma Heating Research in MHD-Nozzle Device.
Tech Area / Field
- FUS-MCS/Magnetic Confinement Systems/Fusion
8 Project completed
Senior Project Manager
Lapidus O V
VNIIEF, Russia, N. Novgorod reg., Sarov
- Los-Alamos National Laboratory, USA, NM, Los-Alamos
Project summaryThe research covers numerical calculation theoretical and experimental investigations of plasma heating during its outflow through MHD-nozzle. The operation concept of this device is based on possibility of magnetized plasma acceleration in MHD-nozzle up to ultrahigh velocities and its following high efficient thermalization. The explosive magnetic generator (EMG) with unique power and output energy characteristics are used as an energy sources for plasma device powering.
The main results that we have received nowadays enable us to inference about the serviceability of MHD-nozzle device and possibility of plasma production with effective temperature of ~1 keV and microsecond range lifetime. The subsequent increase of plasma parameters is associated with its adiabatic compression.
The goal of this work is to obtain the reference data for the project or, in case of a successful work, development of the project itself "Device with MHD-nozzle and the following plasma compression" where considerable plasma characteristics increase may be reached.
For this purpose it is required more intimate investigation of MHD-nozzle device operation and magnetized plasma behavior in high magnetic field as well as the consideration of the ways of effective adiabatic plasma compression including:
- numerical simulation and theoretical calculation of the processes of the plasma formation, acceleration and heating in MHD-nozzle device and investigation of cylindrical liner implosion under magnetic field action;
- study of initial conditions effect on plasma parameters. Initial conditions include: chamber shape and dimensions, gas compositions and density; as well as powering conditions, including limiting modes with source output energy up to 20–30 MJ;
- investigation of possibility of hot plasma lifetime increase in device;
- investigation of plasma parameters from its radiation;
- updating of explosive magnetic energy sources for plasma device and liner system experiments;
- modeling investigations of separate stage of processes by means of capacitor banks and test beds.
During work performance it is planned to obtain the information about physical features MHD-nozzle device operation that is new scientific information, besides that we hope, that new prospects will be opened to create new generation of pulsed power devices with wide range of different applications.
Project participants have a huge experience, that was received during special techniques designing in high energy density physics, strong magnetic Holds, high speed processes registration. They are able to use their experience for project tasks solution.
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