XRMC: new device radionuclide

Hi Bruno,


I have created a new device that inherits from spectrum: now one can define a spectrum using the name of an X-ray producing radionuclide (like "55Fe"), its activity and unit of activity.
This is possible through a couple of new functions I added to xraylib: I am offering support for 10 commonly used radionuclides:

55 Fe
238 Pu
244 Cm
109 Cd
125 I
241 Am
153 Gd
57 Co
133 Ba
137 Cs

So for this to work, you will need to use the development version of xraylib (branch nuclide-data, will merge it later into master).

Ciao ciao,

Tom