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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 7: Superconductivity"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 7.3_1: calculate_critical_temperature_of_element.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"//Chapter-7,Example7_3_1,pg 7-6\n",
"\n",
"Ho=2*10^5 //critical field at absolute zero\n",
"\n",
"Hc=1*10^5 //critical field at given temperature\n",
"\n",
"T=8 //temperature\n",
"\n",
"Tc=T/sqrt(1-(Hc/Ho))\n",
"\n",
"printf('\ncritical temperature of the element Tc = %.2f Kelvin' ,Tc)\n",
""
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 7.3_2: find_the_critical_field.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"//Chapter-7,Example7_3_2,pg 7-7\n",
"\n",
"Bo=3.06*10^-2 //critical field at absolute zero\n",
"\n",
"Tc=3.7 //critical temperature\n",
"\n",
"T=2 //temperature\n",
"\n",
"Bc=Bo*(1-(T/Tc)^2)\n",
"\n",
"printf('\ncritical field of wire Bc = %.5f T',Bc)\n",
""
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 7.3_3: calculate_the_critical_current.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"//Chapter-7,Example7_3_3,pg 7-7\n",
"\n",
"Ho=6.5*10^4 //critical field at absolute zero\n",
"\n",
"Tc=7.18 //critical temperature\n",
"\n",
"T=4.2 //temperature\n",
"\n",
"r=0.5*10^-3 //radius of lead wire\n",
"\n",
"Hc=Ho*(1-(T/Tc)^2)\n",
"\n",
"Ic=2*%pi*r*Hc\n",
"\n",
"printf('\ncritical current for wire Ic = %.2f Amperes\n',Ic)"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 7.3_4: calculate_the_isotopic_mass.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"//Chapter-7,Example7_3_4,pg 7-8\n",
"\n",
"Tc1=4.185 //critical temperature 1\n",
"\n",
"Tc2=4.133 //critical temperature 2\n",
"\n",
"M1=199.5 //isotopic mass of a metal at temperature T1\n",
"\n",
"a=0.5\n",
"\n",
"M2=(Tc1*sqrt(M1)/Tc2)^2\n",
"\n",
"printf('\nisotopic mass is M2 = %.2f',M2)\n",
""
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Scilab",
"language": "scilab",
"name": "scilab"
},
"language_info": {
"file_extension": ".sce",
"help_links": [
{
"text": "MetaKernel Magics",
"url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
}
],
"mimetype": "text/x-octave",
"name": "scilab",
"version": "0.7.1"
}
},
"nbformat": 4,
"nbformat_minor": 0
}
|
