#name   Format    Cupper
Cu 	2
#
#  Elem	 rho(g/cm^3)	Gas/Solid(1/0)  refl.index Birks c
#  rho may be 8.96
1         8.94             0               0       0 0 0
# 	Z	A  	N
	29 	63.5	1
#  ⟨Z/A⟩   I[eV]   a       k      x0    x1     Cbar  delta0
0.45636 322.0 0.1434  2.9044 -0.0254  3.2792    4.4190 0.08
