     1   meaning  :  1 tchebychev 2 Lanczos : 3 Cg
      1   absorber atom number 
     1        L_absorber  orbital moment of the final electron 
   0.0     0.0       1.0     and its component
      2                           pot short_cut
      2500                         number of Hamiltonian multiplications 
0.0                              shift to be applied to the bottom limit  in  the renormalisation  for Chebyschev spectra
Zb_            
