Loadable Function: a = CS_FluorLine (Z, E,line)

Fluorescent line cross section (cm2/g)

          Z : atomic number
          line :
          KA_LINE 0
          KB_LINE 1
          LA_LINE 2
          LB_LINE 3
          (Individual lines are also defined with negative flags
          See file lines.h in src directory for equivalences.)
          E : energy (keV)