#name format   standard rock.
StdRock  2
#      Z=11, A=22, Z/A = 0.5, Z^2/A = 5.5 rho = 2.8
#
#  Elem	 rho(g/cm^3)	Gas/Solid(1/0)  refl.index Birks c
#  rho may be 2.65
1         2.8             0               0      0 0 0
# 	Z	A  	N
	11	22	1

#  ⟨Z/A⟩   I[eV]   a       k      x0    x1     Cbar  delta0
0.500	136.4  0.0830  3.4120  0.0492  3.0549   3.7738 0.00
