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[Phys-L] Re: lead vest



I've been; I was "X-rayed" w/ a Siemens: 70 KV 7 mA ~ 3/4 sec.
The film is backed w/ Pb foil.

My dentist said the beam is well collimated -- narrower than the film,
and the generator has what appears to be a rather thick Al filter.

bc

Michael Edmiston wrote:

Typical dental x-ray energy runs between 60 and 70 keV.

x-rays of this energy and below are pretty much knocked out even with 1
mm of lead sheet, so I would think a 3 mm apron would be extremely
effective.

I would certainly expect anyone using a lead vest on their body or in
their luggage would immediately be subjected to a hand search. Blocking
the airport x-rays does not make you invisible; it's just the opposite.
You would effectively be shouting to the security personnel, "I'm hiding
something! Better search me!"

Michael D. Edmiston, Ph.D.
Professor of Physics and Chemistry
Bluffton University
Bluffton, OH 45817
(419)-358-3270
edmiston@bluffton.edu




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