#name   Format    Argon gas
Argas 	2
#
#  Elem	 rho(g/cm^3)	Gas/Solid(1/0)  ref.index   Birks corr
#   rho may be 1.662e-3
1         1.782e-3            1          283        0 0 0
# 	Z	A  	N
	18      39.95  	1

#  ⟨Z/A⟩   I[eV]   a       k      x0    x1     Cbar  delta0
  0.45056   188.0 0.1971  2.9618  1.7635  4.4855   11.9480 0.00
