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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 17: Quantum Theory"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 17.1: Maximum_kinetic_energy.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc\n",
"clear\n",
"//Input data\n",
"w=4000//Wavelength of the light in Angstrom units\n",
"wf=2.25//Work function of potassium in eV\n",
"m=(9.1*10^-31)//Mass of the electron in kg\n",
"v=(3*10^8)//Velocity of light in m/s\n",
"c=(1.6*10^-19)//Charge of the electron in coloumbs\n",
"h=6.626*10^-34//Plancks constant in Js\n",
"\n",
"//Calculations\n",
"E=(h*v)/(w*10^-10*c)//Energy of incident photon in eV\n",
"KE=(E-wf)//Kinetic energy in eV\n",
"\n",
"//Output\n",
"printf('Maximum kinetic energy of photoelectron is %3.3f eV',KE)"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 17.2: Stopping_potential.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc\n",
"clear\n",
"//Input data\n",
"wf=1.9//Workfunction of the material in eV\n",
"w=3000//Wavelength of the light in Angstrom units\n",
"v=(3*10^8)//Velocity of light in m/s\n",
"c=(1.6*10^-19)//Charge of the electron in coloumbs\n",
"h=6.626*10^-34//Plancks constant in Js\n",
"\n",
"//Calculations\n",
"V=(1/c)*(((h*v)/(w*10^-10))-(wf*c))//Stopping potential in V\n",
"\n",
"//Output\n",
"printf('Stopping potential is %3.2f V',V)"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 17.3: Shortest_wavelength.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc\n",
"clear\n",
"//Input data\n",
"V=(70*10^3)//Accelerating potential in V\n",
"v=(3*10^8)//Velocity of light in m/s\n",
"c=(1.6*10^-19)//Charge of the electron in coloumbs\n",
"h=6.626*10^-34//Plancks constant in Js\n",
"\n",
"//Calculations\n",
"lmin=((h*v)/(c*V))/10^-9//Shortest wavelength of X-rays produced in mm\n",
"\n",
"//Output\n",
"printf('Shortest wavelength of X-rays produced is %3.4f mm',lmin)"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 17.4: Wavelength.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc\n",
"clear\n",
"//Input data\n",
"w1=2//Wavelength in Angstrom \n",
"Z1=24//Target one\n",
"Z2=42//Target two\n",
"a=1//Constant value\n",
"\n",
"//Calculations\n",
"w2=w1*((Z1-a)/(Z2-a))^2//Wavelength in Angstrom\n",
"\n",
"//Output\n",
"printf('Wavelength is %3.2f Angstrom',w2)"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 17.5: Wavelength.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc\n",
"clear\n",
"//Input data\n",
"w=3//Wavelength of the light in Angstrom\n",
"v=(3*10^8)//Velocity of light in m/s\n",
"h=6.626*10^-34//Plancks constant in Js\n",
"q=40//Scattering angle in degrees\n",
"m=(9.11*10^-31)//Mass of electron in kg\n",
"c=(1.6*10^-19)//Charge of the electron in coloumbs\n",
"\n",
"//Calculations\n",
"dl=(h/(m*v))*(1-cosd(q))/10^-10//Wavelength in Angstrom\n",
"l=(w+dl)//Wavelength of scattered X-rays\n",
"\n",
"//Output\n",
"printf('Wavelength of scattered X-rays is %3.6f Angstrom',l)"
]
}
],
"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
}
|
