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{
"metadata": {
"name": "Chapter_3_Kittel"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": "Introduction to Solid State Physics"
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": "Example number 3.1, Page Number 84\n"
},
{
"cell_type": "code",
"collapsed": false,
"input": "#importing module\n\nfrom __future__ import division\nimport math\n\n#Variable declaration\n\ne = 5*pow(10,-10); # charge on the electron\n\nr0 = 1*pow(10,-8); # atomic radius\n\n# Calculation\n\nR = 4*10**(-8); # interatomic distance in cm\n\nU = -4*e**2*r0**5/R**6; # The van der waals interaction formula\n\n# Result\n\nprint \" The Van Der Waals interaction energy is \",U ,\"ergs\"",
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": " The Van Der Waals interaction energy is -2.44140625e-14 ergs\n"
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": "Example number 3.2, Page Number 91"
},
{
"cell_type": "code",
"collapsed": false,
"input": "#importing module\n\nfrom __future__ import division\nimport math\n\n# Variable declaration\n\ne = 4.8*pow(10,-10); # charge on proton\nr0 = 2.81*pow(10,-8); # distance between positive and nearest negative ion in Nacl crystal\n\nU = e**2/r0; # in ergs\n\nE = U/(1.6019*pow(10,-12)); # converting to eV as 1eV = 1.6019 * 10**(-12) ergs\n\n#result\nprint \" The potential energy of the two ions by themselves is \",E,\"eV\"\n\n\n\n\n\n\n ",
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": " The potential energy of the two ions by themselves is 5.11847696874 eV\n"
}
],
"prompt_number": 22
},
{
"cell_type": "code",
"collapsed": false,
"input": "",
"language": "python",
"metadata": {},
"outputs": [],
"prompt_number": 19
},
{
"cell_type": "code",
"collapsed": false,
"input": "",
"language": "python",
"metadata": {},
"outputs": []
}
],
"metadata": {}
}
]
}
|
