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Diffstat (limited to '3717/CH4/EX4.2')
| -rw-r--r-- | 3717/CH4/EX4.2/Ex4_2.sce | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/3717/CH4/EX4.2/Ex4_2.sce b/3717/CH4/EX4.2/Ex4_2.sce new file mode 100644 index 000000000..cbb8e29e9 --- /dev/null +++ b/3717/CH4/EX4.2/Ex4_2.sce @@ -0,0 +1,23 @@ +// Ex4_2 Page:59 (2014)
+clc;clear;
+e = 1.6e-019; // Energy conversion factor, J/eV
+m = 9.1e-031; // Mass of an electron, kg
+h = 6.626e-034; // Planck's constant, Js
+c = 3e+08; // Speed of light in vacuum, m/s
+// Non-relativistic case:
+E = 1; // Kinetic energy of an electron, eV
+p = sqrt(2*m*E*e); // Momentum of the electron, kg-m/s
+lambda = h/p*1e+09; // de-Broglie wavelength of electron, nm
+printf("\nNon-relativistic Case:\nThe de-Broglie wavelength of electron = %3.1f nm", lambda);
+// Relativistic case:
+KE = 100; // Kinetic energy of an electron, MeV
+p = KE*e/c*1e+06; // Relativistic momentum of the electron, kg-m/s
+lambda = h/p; // de-Broglie wavelength of electron, m
+printf("\nRelativistic case:\nThe de-Broglie wavelength of electron = %5.3e m", lambda);
+
+
+// Result
+// Non-relativistic Case:
+// The de-Broglie wavelength of electron = 1.2 nm
+// Relativistic case:
+// The de-Broglie wavelength of electron = 1.242e-14 m
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