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// Scilab Code Ex10.6: Page-224 (2010)
e = 1.6e-019; // Energy equivalent of 1 eV, J/eV
h = 6.626e-034; // Planck's constant, Js
m = 9.1e-031; // Mass of the electron, kg
N_D = 18.1e+028; // Number density of conduction electrons in Al, per metre cube
E_F = h^2/(8*m)*(3/%pi*N_D)^(2/3); // Fermi energy of aluminium, J
Em_0 = 3/5*E_F; // Mean energy of the electron at 0K, J
printf("\nThe Fermi energy of aluminium = %5.2f eV", E_F/e);
printf("\nThe mean energy of the electron at 0K = %4.2f eV", Em_0/e);
// Result
// The Fermi energy of aluminium = 11.70 eV
// The mean energy of the electron at 0K = 7.02 eV
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