Re: A query for radsafe on health risk of metal detector friskersand portals

[Michael McNaughton <mcnaught@LANL.GOV>]

At 11:33 AM 10/03/2003 +1000, Sonter Mark wrote:

>personnel have to pass thru metal detector portals and / or undergo metal 

>detector frisking several times per day, to maintain system security.



Metal detectors consist of a transmitting coil of wire and a receiving coil 

of wire; in principle these are like a radio transmitter and receiver. If 

there is an electrical conductor between the tranmitter and the receiver, 

the "eddy currents" change the induced emf in the receiving coil.



mike



Mike McNaughton

Los Alamos National Lab.

email: mcnaught@LANL.gov or mcnaughton@LANL.gov

phone: 505-667-6130



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