05-09-2013, 04:57 AM
Another poster added the following information:
I can't understand it at all but perhaps someone here will.
I can't understand it at all but perhaps someone here will.
Quote:The shielding concept of a dipole-like magnetic field and plasma, surrounding a spacecraft forming a “mini magnetosphere” the determined effectiveness of a magnetized plasma barrier to be able to expel an impacting, low beta, supersonic flowing energetic plasma representing the ‘aetheric energies’ . Optical and ionised plasma, plasma density, the plasma flow velocity, and the intensity of the dipole field show the creation of a narrow transport barrier region and diamagnetic cavity virtually devoid of energetic plasma particles. This demonstrates the potential viability of being able to create a small “hole” in the (‘aetheric energies’ ) plasma, of the order of the ion width, in which an inhabited spacecraft could reside in relative safety.
The interaction of flowing plasma with a dipole magnetic field: measuremental, diamagnetic cavity relevant to spacecraft protection. It is quantitatively, compared to a 3D particle-in-cell ‘hybrid’ code stimulation, which uses kinetic ions and fluid electrons, showing excellent quantitative agreement. Together, demonstrate the pivotal role of particle kinetics in determining generic plasma transport barriers.
A major issue and safety standpoint for bio-manned spacecraft is of greatest concern are the energetic heavy particles of which ~90% are protons, 9% are alphas, with electrons making up the majority of the remaining mass. Low-Earth-Orbit at approximately 300km altitude, this close to the Earth the atmosphere is still significantly dense, the potentially lethal damage to biological tissue from exposure to radiation in space arising, for example, from the ‘ ionised wind’ or ‘aetheric energies’ plasma. The ‘ionised wind’ consists of plasma characterised by low densities, moderate temperatures and fast/supersonic directed flows; the actual plasma wind output is highly variable on time scales of milliseconds upwards due to the localised and turbulent origins of the energetic plasma from the surface area, the magnetic field is carried with the out flowing plasma thus attenuate much of the particle flux.
There is the additional protection created by the ‘inner magnetosphere’. This is the magnetised plasma structure created as a consequence of the magnetic dipole field as it extends out. Since there is an need for the viability of creating artificial magnetosphere structures to provide local protection of spacecraft instrumentation and ‘astronauts’ but these require an impractically large power supply and assemblies to create the necessary field strengths.
Essentially single particles approaches the necessary magnitude of the protecting field rather than considering collective plasma effects that might be expected to dominate on 3-d hybrid modelling of the plasma-dipole field interaction suggests that more modest field strengths indeed are more effective at creating diamagnetic-like cavities (regions in which energetic ionised particles are essentially absent) that have the potential for spacecraft shielding.
A magnetised flowing plasma beam is incident upon a dipole magnetic field structure, seeking to simulate such field structures on incident ‘ionised wind’ particles, which outlines the mechanics of the apparatus, spatially resolved measurements of the principal plasma parameters from the dHybrid kinetic stimulation used on spacecraft protection systems. Analogues to the ionised plasma wind, spacecraft interaction system are of relevance to the plasmas, similar to those using ‘mini-magnetosphere’ like structures as a means of aiding spacecraft propulsion.
The ‘Light’ plasma confinement device, a modified version used for plasma–neutral interactions and relevant diverters. The plasma in this system consists of a supersonic plasma beam including the dipole magnetic field source and the location with peak densities and temperatures in the range 1017-1019 and 5-7eV respectively the principal components of the device configured for the temperature range.
The ‘vacuum vessel’, constructed of non-magnetic, is cylindrical with length and of diameter in respect of the device and is pumped by diffusion pumps that are isolated by gate ‘valves’ and located at each end of the device. The field ‘coils’ and is connected in series with a single return conductor to cancel the error field, that is the maximum field at the centre of the ‘machine’, this light field’ represents the ‘mini interplanetary’ magnetic field. The ‘ vacuum vessel’ is divided by a diaphragm containing a small orifice (14mm diameter) to separate off the “target chamber” in which an increased pressure, corresponding to neutral densities can be maintained, enhancing visible ‘light’ emission and enabling better use of fast or incremental ‘power’. The plasma source is a development of a modified “duo-plasma” source.
Two dipole field sources are used, a permanent, cylindrical magnet (with a strong field strength at the pole) mounted on a probe manipulator which allowed it to be moved to various axial positions along the target chamber. The second magnet source is a pulsed system formed from a 20 turn solenoid with a maximum current, mounted on reciprocating probe holders so as to minimise the deleterious effects of probe heating by the plasma beam, allow the acquisition of radial profiles (with a spatial resolution) of electron density and temperature at various positions within the target and upstream chambers. As it is obtained in a few tens of seconds, over which time any variation in plasma source output is minimised. By a combination of the radial scanning of the probe system and moving the axial position of the dipole field source, it is possible to obtain plasma parameters around the plasma- dipole field interaction region. The ‘visible light’ of the plasma beam interacting with the permanent dipole magnet and visible light emission (predominantly originates from interaction of the plasma with the background neutrality) corresponds to regions of higher plasma density, and the plasma beam is deflected in an apparently stable narrow layer around the magnet casing. This source produces a dipole field structure but at significantly stronger field strengths allowed the dynamics of the interaction to be utilised.
Upstream plasma beam characteristics, the interaction of the plasma beam with the static dipole field. (i.e. in a region sufficiently distant from the region in which the dipole field dominates) electron density and temperature respectively. In the absence of the downstream dipole field structure, it would be expected that this plasma would propagate along the solenoidal confining field until it encountered the end target chamber, with no reductions in the peak density or temperature occurring over the characteristic axial scale lengths or beam width, remaining constant along the whole length of the target chamber
Typically the plasmas produced are supersonic and in the absence of any direct ion energy, this ‘directly’ flows from the relative magnitudes of the floating and plasma potentials. Defining the sheath coefficient in the usual way, in terms of the ‘floating potential’ and a ‘plasma expression’ are due to plasma with an isotropic velocity distribution, subsonic ion flow and no secondary emission.
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