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

From: Repeating Rifle (salmonegg_at_sbcglobal.net)
Date: 09/26/04 

Date: Sun, 26 Sep 2004 22:15:08 GMT

in article wax5d.5110$5O5.1657@news-server.bigpond.net.au, marg allison at
marg.allison@newspace.net wrote on 9/26/04 3:51 AM:

> 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.
>
The way I am familiar with this is by the use of the term *mass absorption
cross-section*. Look up an offical definition. It is a description of how
much blockage a (small) unit mass of material presents to radiation. It is
as if that much totally blocking area were placed in the beam.

This description method was developed for x-rays but is applicablle to other
types of radiation. For x-rays, this cross-section is strongly dependent
upon atomic order and photon energy.

Bill

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