Microwaves and radiation -Soon all will want to know!

To block standard micro wave radiation all you need is any conductive medium (metal) solid or mesh were the hole size is less than a quater wave of the incident radiation. Modern day aircraft (millitary) use special absorbant material that is a carbon loaded foam.

To contain a plasma strong magnets are called for and thick metal shielding. This is very, very dangerous and expensive.

Why is containing a plasma dangerous? Please explain. Expensive in what way?

What about microwave radiation that is not standard? Hasn't the military developed radars that will go right through solid steel? A faraday cage will only attenuate to a certain level, and I don't pretend to understand the measurements of such, but it would seem to follow that an increase in transmission would decrease attenuation.

How would magnets contain a plasma? In what configuration?

Plasma is high temperature ionized gas. It can be contained by a powerful magnetic field because of the ionization. You can do this by winding electrical coils around a high temperature resistant metal pipe to contain the plasma. It is very costly to contain a plasma field because of the high temperature resistant metals needed to contain it and the power needed to supply the magnetic field. It is also very dangerous partly because of the large amounts of electrical power required, and also because if the magnetic field collapses, you may have very hot gas escaping at high speed.

This phenonema is sometimes refered to as an explosion!

I disagree somewhat to most of the above statement. I build(assemble) plasma systems to be used in universities for training. I use 316 stainless chambers. I have quartz window in them for student to view the plasma, while wearing proper safety glasses.

While a plasma is considered hot, It does not take much in the way of cooling to contain this heat.

Plasma can be described as an ionized gas, removal of power quickly extinguishes the plasma. It takes a lot of power at atmospheric pressure to maintain a plasma. Usually plasmas are maintained in a vacuum chamber. From my point of view plasmas are the forth state of matter. They are not truly a gas.

I have had a water leak into a plasma chamber and had no explosion from water turning into steam.

These systems are used to sputter a silicon oxide or a metal, usually copper, onto a substrate.

Any conductive metal will stop Rf energy by conducting it to ground. A screen with a hole size smaller than 1/4 wave length of the Rf frequency will stop RF energy.

RF energy can be dangerous but is not something to be afraid of.

Magnetic field don't so much contain a plasma as they direct it. You don't need magnetic fields to contain a plasma, but if you want the plasma to be useful you do need to direct it.

Proper RF shielding......

This was taken by a fellow RF engineer of a contract worker that came to his Transmitter facility.. It is hilarious. Supposedly the guy was serious about trying to protect his seed but sadly shows common misconceptions about RF energy.

What an idiot this fellow was, it just shows lighting can strike twice. Foiled again!

<an idiot this fellow >

Why blame the poor fellow-only a contract worker.

Was he ADVISED by people who are supposed to know how to protect oneself and all parts?

<Was he ADVISED by people who are supposed to know how to protect oneself and all parts?>

Perhaps some who do know will advise those who do not ?

For a cheap and easy (and available) way to block RF, how about Aluminum window screen? Just make sure that what you buy is Al and not nylon or other modern day screenings.

If I were building a screen room, I would staple the screen to the studs and ceiling joists before putting in sheet rock, and no one would ever know it was there.

Another thought that comes to mind is to insulate the room with roll insulation with a foil backing. This could solve two problems at once.

Sincerely

Bill