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RE: Radiation-Proof Uniform?



Well, based on the "thickness of 0.43mm (0.7grams/sq.inch)," the density is 2.5 gm/cm^2, while the density of carbon is 2.25 gm/cm^2 and that of aluminum is 2.7 gm/cm^2. Interesting, as some efforts in nanotechnology is based on based on carbon tubes. If the shielding efficiency is similar to that 0.5 mm of Pb, I can see see a value in fluoro radiology as the lead-vinyl aprons are 4.73 gm/sq.inch and is 1.58 mm thick.  I notice that the x-ray attenuation values are not compared to the 0.5 mm equivalent leaded apron, which should be based on maximum kVp, not "average Kv level." 
 
Of course, I am assuming that all of there numbers a valid.  As someone pointed out, the maximum beta particle of Si-32 is not 1800 keV.  Beta particles from P-32 are about that value.
 
I believe that shielding is based on the electron density of the material.  Of course, the electron density is related to the density of the material. 
 

-- John
John P. Jacobus, MS
Certified Health Physicist
3050 Traymore Lane
Bowie, MD 20715-2024

e-mail:  jenday1@msn.com

-----Original Message-----
From: Kai Kaletsch [mailto:eic@shaw.ca]
Sent: Friday, November 15, 2002 11:34 AM
To: Ted Rockwell; Jacobus, John (NIH/OD/ORS); radsafe@list.vanderbilt.edu
Subject: Re: Radiation-Proof Uniform?

They have a data sheet at
. . .