mass absorption coefficient of aluminium

Smythe · 13-12-2011 10:58PM #1

I was conducting an experiment, and we had to use a radioactive source and a Geigor counter, in conjunction with aluminium plates.

Using the data we produced we had to graph an absorption curve and obtain a value for the mass absorption coefficient of aluminium.

Then we had to compare this value with the accepted value for the mass absorption coefficient of aluminium.

Would anyone here know what the accepted value is, as I can't seem to locate it on Google, or anywhere else.

Thank you.

rgunning · 14-12-2011 11:21AM

NIST should be a good enough bet:

http://physics.nist.gov/PhysRefData/XrayMassCoef/ElemTab/z13.html

You need to know the energy of the beam (I guess gamma-rays for this expt). You can find that out by knowing what the radioactive source is.

Smythe · 14-12-2011 03:01PM

Thank you rgunning.

rgunning wrote: »

NIST should be a good enough bet:

http://physics.nist.gov/PhysRefData/XrayMassCoef/ElemTab/z13.html

You need to know the energy of the beam (I guess gamma-rays for this expt). You can find that out by knowing what the radioactive source is.

Yes, gamma.

It was a 5uCi Sr90 source.

FarmerGreen · 20-12-2011 07:50AM

rgunning wrote: »

NIST should be a good enough bet:

http://physics.nist.gov/PhysRefData/XrayMassCoef/ElemTab/z13.html

You need to know the energy of the beam (I guess gamma-rays for this expt). You can find that out by knowing what the radioactive source is.

Interesting graph, fancy a Gamma ray laser?

mass absorption coefficient of aluminium

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