Re: Help with film script: radiation shielding properties of metals

From: Dave (noone_at_nowhere.com)
Date: 09/26/04 

Date: Sun, 26 Sep 2004 12:29:56 -0000

repeat after me... google is our friend. got a random topic like this, try
there first.
mostly when talking about shielding you use 'half thicknesses', which is the
thickness of material needed to reduce the given radiation by one half. for
alpha and beta that is very thin as they are charged particles and can be
stopped by a *** of paper. for xray and gamma it is much more complicated
as it depends on the energy of them. neutrons are even stranger to shield.
see more info at: http://hps.org/publicinformation/ate/cat47.html
http://www.globalsecurity.org/wmd/library/policy/army/fm/3-3-1_2/Appb.htm
http://www.nrc.gov/reading-rm/basic-ref/teachers/unit1.html
http://www.ehs.ucsf.edu/Manuals/RSTM/RSTM%20glossary.htm
etc, etc, etc

"marg allison" <marg.allison@newspace.net> wrote in message
news:wax5d.5110$5O5.1657@news-server.bigpond.net.au...
> I'm hoping someone here can help me with some basic jargon. How would a
> scientist verbalise the ability of materials to attenuate radiation, i.e.
> what is the measurment unit and what would be typical values for 3mm
> thick aluminium and 2mm thick steel against alpha, beta, gamma and
> x-rays?
>
> Thanks in advance
> m.a.
>