Repository on photoabsorption and polarisability calculations with new IAEA results

To calculate a polarisabilty, do:

root .L PhotoAbsorptionCalculation.cpp PhotoAbsorptionCalculation("data/Zr90_gx.dat") (for example... change the input file to calculate another nucleus apart from 90Zr.

To plot all of the dipole polarisabilities do: root .x PlotData.cpp

The data.txt file contains the polarisabilities from Dietrich and Bermann

The PlotData.cpp file gives another way of plotting new results

To add things: git add -u (will add all changed files to the repo) git add (will add a specific file to the repo)

git commit -m "message" (make a commit, like a little package of changes to do all at once, with a message explaining it)

git push (push the changes to the remote repository)

git pull (pull any changes from the remote repository)

data.txt contains the information from the complication of Dietrich and Berman, with Z (the proton number), A (the mass number), sigma_neg2 (the integral of the cross section weighted with 1/E_gamma^2) and the uncertainty in sigma_neg2 as the columns.

The data directory itself contains the (g,xn) data derived from a number of different sources from EXFOR, mostly data which have been reanalysed as part of the IAEA photonuclear reactions working group.