Aluminum foil lined steel (STEEAL) for anti-ARS shielding

Shielding experiments within the PSS suggest that a combination of steel roof panels and aluminum foil make an efficient and relatively inexpensive shielding material to build a sleeping station for the protection from exposure to ARS as described below.

1) Steel is only suitable as a shielding material for lower frequencies up to about 1 GHz which means it is not well suited for shielding from the cell phone signals, WiFi, ground penetrating radar, and other "see through the wall" techniques.  Steel, however, could be used for shielding from radiation of longer wavelengths (i.e. radio waves).  Since it is assumed that electromagnetic radiation of variable wavelengths could be used alternatively in ARS administration, the presence of the steel panels could be beneficial.  Steel roof panels are readily available, relatively inexpensive to buy and are over 10 times thicker than the heavy duty aluminum foil which is important since the shielding efficiency increases with increased thickness of the shielding material.

2) Aluminum is effective in shielding from electromagnetic radiation of higher frequencies (> 1 GHz) steel is not suitable for.  However even though the addition of aluminum foil shielding to the steel panels appears to be very efficient, it may not be sufficient on its own.  The higher thickness, magnetic properties and shielding efficiency of steel at lower frequencies may be providing additional required anti-ARS shielding non-magnetic aluminum cannot provide.  Past observations indicated the capability of bulky steel objects to divert and shield from some ARS types.  Even if aluminum alone was able to provide the shielding necessary, it is not as readily available as panels and would be more expensive to use at higher layer thicknesses comparable to the thickness of the roofing steel panels used.

To take advantage of the combined shielding benefits of steel and aluminum in a cost-effective way the use of corrugated steel roofing panels lined with aluminum foil is suggested.  One way of making such panels with the use of painter's tape is illustrated in Fig. 1 though 6 which would result in at least a dual layer aluminum shielding due to the steel panels overlap when assembled and a requirement to patch the gaps between the panels with more aluminum foil after the steel dome assembly.  It is not currently known if there are any advantages in using the aluminum layer shielding on either the inside or outside.  As such, for simplicity of assembly and gap patching of steel panels on the outside of the protective dome is probably recommended.

Note 1:  In the PSS design the overlapped steel panels are secured to each other by taping the overlapped edges together with a painter's tape on both sides.

Note 2:  One layer of regular aluminum foil does not appear sufficient for anti-ARS shielding.  An estimated 2 or 3 layers of heavy duty aluminum foil (or equivalent) is recommended and/or 2-sided STEEAL.  Walmart (Great Value) heavy duty aluminum foil was mainly used for shielding.