You're reading an old version of this documentation! 
 For the latest release, please have a look at v1.0. 

5. Material commands

Macro commands related to material of the Target.

5.1. Element definition

# define element with isotopes  NAME        CH.SYM.   ISOTOPES 
/SEE/material/addElement        enriched_B  B         10  0.96    11  0.04

addElement parameters	Type	M?	Description	Example value
NAME	string	y	Name of new element (its reference)	enriched_B
CHEMICAL SYMBOL	string	y	Chemical symbol of element	B
ISOTOPE NUCLEON NUMBER	int	y	Nucleon (mass) number of an isotope, A	10
ISOTOPE ABUNDANCE	double	y	Abundance fraction of an isotope	0.96

ISOTOPE NUCLEON NUMBER and ISOTOPE ABUNDANCE parameters can only be used in pairs: “A\(_1\) abundance\(_1\) A\(_2\) abundance\(_2\) …”

There are no default values for the parameters of this command.

5.2. Material definition

# define material           NAME        DENSITY       ELEMENTS
/SEE/material/addMaterial   ShieldMat   2.52 g/cm3    enriched_B 4  C 1
/SEE/material/addMaterial   Si3N4       3.17 g/cm3    Si 3          N 4

addMaterial parameters	Type	M?	Description	Example value
NAME	string	y	Name of new material (its reference)	Si3N4
DENSITY with unit	double u	y	Material density	3.17 g/cm3
ELEMENT NAME or CHEMICAL SYMBOL	string	y	Name or chemical symbol of an element	enriched_B, C
ELEMENT STOICHIOMETRIC RATIO	double	y	Chemical ratio of an element	4

Any element of the periodic table can be used for CHEMICAL SYMBOL parameter.

ELEMENT NAME/CHEMICAL SYMBOL and ELEMENT STOICHIOMETRIC RATIO parameters can only be used in pairs: “name\(_1\) ratio\(_1\) name\(_2\) ratio\(_2\) …”

There are no default values for the parameters of this command.

5.3. Mixture definition

# define mixture            NAME        DENSITY       MATERIALS
/SEE/material/addMixture    BEOLmix     3 g/cm3       G4_Cu 0.4   Si3N4 0.6

addMixture parameters	Type	M?	Description	Example value
NAME	string	y	Name of new mixture (its reference)	mixMat
DENSITY with unit	double u	y	Material density of homogeneous mixture	3.41 g/cm3
MATERIAL NAME	string	y	Name of a component	G4_Cu, Si3N4
MATERIAL MASS FRACTION	double	y	Mass fraction of a component	0.35

Any predefined G4 element/material from this list can be used for the MATERIAL NAME parameter.

MATERIAL NAME and MATERIAL MASS FRACTION parameters can only be used in pairs: “name\(_1\) mass_fraction\(_1\) name\(_2\) mass_fraction\(_2\) …”

There are no default values for the parameters of this command.