Absorption coefficient data
 

Hi all,

I wanted the data for absorption coefficient of water vapour,carbondioxide and aluminium for the wavelength range of 0- 20,000 Angstrom units.

While the data upto 7000 Angstrom is easy to find,I am having difficulty in finding out the rest of the data.

All the sources I have come across upto now are giving directly the absorptvity from which it is difficult to find out absorption coefficient because I don't know the path length they have used.

I request anybody out here to help me with this problem.