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{
"metadata": {
"name": "",
"signature": "sha256:b45bed0bf651f557c40cec41e1736def1e279410a176004acdb12e68c84f8fd8"
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"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Chapter5Electron Oprtics"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Ex1-pg 72"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"##Example 5.1\n",
"##Electron refraction, calculation of potential difference\n",
"\n",
"##given values\n",
"V1=250.;##potential by which electrons are accelerated in Volts\n",
"alpha1=50*math.pi/180.;##in degree\n",
"alpha2=30*math.pi/180.;##in degree\n",
"b=math.sin(alpha1)/math.sin(alpha2);\n",
"##calculation\n",
"V2=(b**2.)*V1;\n",
"a=V2-V1;\n",
"print'%s %.1f %s'%('potential difference(in volts) is:',a,'');\n",
"\n",
"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"potential difference(in volts) is: 336.8 \n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Ex2 $3-pg94"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"\n",
"##Example 5.2&5.3\n",
"import math\n",
"##Cyclotron, calculation of magnetic induction,maximum energy\n",
"##given values\n",
"f=12*(10**6);##oscillator frequency in Hertz\n",
"r=.53;##radius of the dee in metre\n",
"q=1.6*10**-19;##Deuteron charge in C\n",
"m=3.34*10**-27;##mass of deuteron in kg\n",
"##calculation\n",
"B=2*math.pi*f*m/q;##\n",
"print'%s %.1f %s'%('magnetic induction (in Tesla) is:',B,'');\n",
"E=B**2*q**2.*r**2./(2.*m);\n",
"print'%s %.3e %s'%('maximum energy to which deuterons can be accelerated (in J) is',E,'')\n",
"E1=E*6.24*10**18/10**6;##conversion of energy into MeV\n",
"print'%s %.1f %s'%('maximum energy to which deuterons can be accelerated (in MeV) is',E1,'');\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"magnetic induction (in Tesla) is: 1.6 \n",
"maximum energy to which deuterons can be accelerated (in J) is 2.667e-12 \n",
"maximum energy to which deuterons can be accelerated (in MeV) is 16.6 \n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Ex4-pg99"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"##Example 5.4\n",
"##Mass spectrograph, calculation of linear separation of lines formed on photographic plates\n",
"\n",
"##given values;\n",
"E=8.*10**4;##electric field in V/m\n",
"B=.55##magnetic induction in Wb/m*2\n",
"q=1.6*10**-19;##charge of ions\n",
"m1=20.*1.67*10**-27;##atomic mass of an isotope of neon\n",
"m2=22.*1.67*10**-27;##atomic mass of other isotope of neon\n",
"##calculation\n",
"x=2*E*(m2-m1)/(q*B**2);##\n",
"print'%s %.3f %s'%('separation of lines (in metre) is:',x,'')\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"separation of lines (in metre) is: 0.011 \n"
]
}
],
"prompt_number": 3
}
],
"metadata": {}
}
]
}
|
