دستورات تعریف ماده مربوط به 20 ماده پرکاربرد در Geant4

// Define Deuterium isotope and element
G4Isotope* isoD = new G4Isotope("Deuterium", 1, 2);
G4Element* elD = new G4Element("Deuterium", "D", 1);
elD->AddIsotope(isoD, 100.*perCent);

G4Material* D2O = new G4Material("HeavyWater", 1.107*g/cm3, 2);
D2O->AddElement(elD, 2);
D2O->AddElement(elO, 1);

G4Material* PMMA = new G4Material("PMMA", 1.18*g/cm3, 3);
PMMA->AddElement(elC, 5);
PMMA->AddElement(elH, 8);
PMMA->AddElement(elO, 2);

G4Element* elGd = new G4Element("Gadolinium", "Gd", 64, 157.25*g/mole);

G4Material* Gd2O3 = new G4Material("GadoliniumOxide", 7.41*g/cm3, 2);
Gd2O3->AddElement(elGd, 2);
Gd2O3->AddElement(elO, 3);

G4Element* elBi = new G4Element("Bismuth", "Bi", 83, 208.98*g/mole);
G4Element* elGe = new G4Element("Germanium", "Ge", 32, 72.64*g/mole);

G4Material* BGO = new G4Material("BGO", 7.13*g/cm3, 3);
BGO->AddElement(elBi, 4);
BGO->AddElement(elGe, 3);
BGO->AddElement(elO, 12);

G4Element* elLi = new G4Element("Lithium", "Li", 3, 6.94*g/mole);
G4Element* elF = new G4Element("Fluorine", "F", 9, 18.998*g/mole);

G4Material* LiF = new G4Material("LithiumFluoride", 2.635*g/cm3, 2);
LiF->AddElement(elLi, 1);
LiF->AddElement(elF, 1);

// Base NaI material
G4Element* elNa = new G4Element("Sodium", "Na", 11, 22.99*g/mole);
G4Element* elI = new G4Element("Iodine", "I", 53, 126.90*g/mole);
G4Element* elTl = new G4Element("Thallium", "Tl", 81, 204.38*g/mole);

G4Material* NaI = new G4Material("SodiumIodide", 3.67*g/cm3, 2);
NaI->AddElement(elNa, 1);
NaI->AddElement(elI, 1);

// Create doped material (approximate 0.1% Tl by mass)
G4Material* NaI_Tl = new G4Material("NaI_Tl", 3.67*g/cm3, 2);
NaI_Tl->AddMaterial(NaI, 99.9*perCent);
NaI_Tl->AddElement(elTl, 0.1*perCent);

G4Material* SiO2_Ge = new G4Material("Silica_GeDoped", 2.20*g/cm3, 3);
SiO2_Ge->AddElement(elSi, 1);
SiO2_Ge->AddElement(elO, 2);
SiO2_Ge->AddElement(elGe, 0.05); // 5% Germanium doping

// Ferrofluid: Magnetite (Fe3O4) nanoparticles in water
G4Element* elFe = new G4Element("Iron", "Fe", 26, 55.845*g/mole);

G4Material* Fe3O4 = new G4Material("Magnetite", 5.17*g/cm3, 2);
Fe3O4->AddElement(elFe, 3);
Fe3O4->AddElement(elO, 4);

G4Material* Ferrofluid = new G4Material("Ferrofluid", 1.18*g/cm3, 2);
Ferrofluid->AddMaterial(H2O, 95.*perCent); // H2O from NIST
Ferrofluid->AddMaterial(Fe3O4, 5.*perCent); // 5% nanoparticles

G4Material* Aerogel = new G4Material("Aerogel", 0.02*g/cm3, 2);
Aerogel->AddElement(elSi, 1);
Aerogel->AddElement(elO, 2);

G4Element* elTa = new G4Element("Tantalum", "Ta", 73, 180.95*g/mole);

G4Material* Tantalum = new G4Material("Tantalum", 16.69*g/cm3, 1);
Tantalum->AddElement(elTa, 1);

G4Element* elHf = new G4Element("Hafnium", "Hf", 72, 178.49*g/mole);

G4Material* HfC = new G4Material("HafniumCarbide", 12.20*g/cm3, 2);
HfC->AddElement(elHf, 1);
HfC->AddElement(elC, 1);

G4Element* elSc = new G4Element("Scandium", "Sc", 21, 44.96*g/mole);

G4Material* Scandium = new G4Material("Scandium", 2.985*g/cm3, 1);
Scandium->AddElement(elSc, 1);

G4Element* elY = new G4Element("Yttrium", "Y", 39, 88.91*g/mole);
G4Element* elAl = new G4Element("Aluminium", "Al", 13, 26.98*g/mole);

G4Material* YAG = new G4Material("YAG", 4.55*g/cm3, 3);
YAG->AddElement(elY, 3);
YAG->AddElement(elAl, 5);
YAG->AddElement(elO, 12);

G4Material* PVT = new G4Material("PVT", 1.02*g/cm3, 2);
PVT->AddElement(elC, 9);  // C9H10 approximate composition
PVT->AddElement(elH, 10);

G4Element* elCd = new G4Element("Cadmium", "Cd", 48, 112.41*g/mole);
G4Element* elTe = new G4Element("Tellurium", "Te", 52, 127.60*g/mole);

G4Material* CdTe = new G4Material("CadmiumTelluride", 5.85*g/cm3, 2);
CdTe->AddElement(elCd, 1);
CdTe->AddElement(elTe, 1);

G4Element* elPb = new G4Element("Lead", "Pb", 82, 207.2*g/mole);

G4Material* PbF2 = new G4Material("LeadFluoride", 7.77*g/cm3, 2);
PbF2->AddElement(elPb, 1);
PbF2->AddElement(elF, 2);

G4Element* elB = new G4Element("Boron", "B", 5, 10.81*g/mole);

G4Material* B4C = new G4Material("BoronCarbide", 2.52*g/cm3, 2);
B4C->AddElement(elB, 4);
B4C->AddElement(elC, 1);

G4Element* elEu = new G4Element("Europium", "Eu", 63, 151.96*g/mole);
G4Element* elS = new G4Element("Sulfur", "S", 16, 32.06*g/mole);

G4Material* Y2O2S_Eu = new G4Material("Y2O2S_Eu", 4.90*g/cm3, 4);
Y2O2S_Eu->AddElement(elY, 2);
Y2O2S_Eu->AddElement(elO, 2);
Y2O2S_Eu->AddElement(elS, 1);
Y2O2S_Eu->AddElement(elEu, 0.02); // 2% Europium doping

G4Element* elBi = new G4Element("Bismuth", "Bi", 83, 208.98*g/mole);
G4Element* elPb = new G4Element("Lead", "Pb", 82, 207.2*g/mole);
G4Element* elSn = new G4Element("Tin", "Sn", 50, 118.71*g/mole);
G4Element* elCd = new G4Element("Cadmium", "Cd", 48, 112.41*g/mole);

G4Material* WoodsMetal = new G4Material("WoodsMetal", 9.70*g/cm3, 4);
WoodsMetal->AddElement(elBi, 50.*perCent);
WoodsMetal->AddElement(elPb, 26.7*perCent);
WoodsMetal->AddElement(elSn, 13.3*perCent);
WoodsMetal->AddElement(elCd, 10.*perCent);

G4Element* elLa = new G4Element("Lanthanum", "La", 57, 138.91*g/mole);

G4Material* La2S3 = new G4Material("LanthanumSulfide", 4.91*g/cm3, 2);
La2S3->AddElement(elLa, 2);
La2S3->AddElement(elS, 3);