
This is a description of the input parameters for xCrossSec

datasets: 
	Select a DABAX file from where the Photon-Atom Cross section
	will be read. The "all" option is also available, and 
	in this case all datasets are used (useful for comparisons).

material: Select the desired material type. Three options are available:
	a) Element(formula) calculation for a single element. 
	b) Mixture(formula) calculation for a compound or a mixture. The user 
		defines the mixture formula. 
		The syntaxis is the following: string with the chemical
		formula of the compound(s) with their weight fraction between 
		parenthesis.
		Examples:
		H20
		SiO2(0.807)B2O3(0.129)Na2O(0.038)Al2O3(0.022)K2O(0.004)
		H2O(0.99)Cl2(0.01)
		H(0.11189834)O(0.88810166)
	c) Mixture(table) calculation for a compound or a mixture defined
		in the included mixture-table (from dabax file Compounds.dat)

table: Compound table, only available if the c) option in material is chosen.

formula: The element or compound or mixture formula, depending the "material"
		selection.

calculate: type the calculation magnitude. The typed word will be
		compared with the magnitude name in the DABAX file, and if 
		they match, the corresponding data are loaded. 
		The "all" option is also available, and in this case all 
		datasets are used (useful for comparisons). 

Energy [eV] grid: the abscissas values for the calculations. Two 
		options are available: 
		a) Standard, which is the energy grid defined in the 
		   DABAX file read in first place.
		b) User-defined, with the parameters described below.
		c) Single-value, with the energy to be entered in 
		   "Starting Energy [eV]" box.

Stating Energy [eV]: the initial energy value (only available if either
		b) or c) is chosen in the "Energy [eV] grid" entry.

To: the last energy value (only available if b) is chosen in the
		"Energy [eV] grid" entry.

Number of points: the number of energy points (only available if b) is 
		chosen in the "sin_theta/lambda grid" entry.

Units: the units in which the Cross Sections are presented

