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{
"metadata": {
"name": "",
"signature": "sha256:983adfa64951b4c71938be02f10b2d0d40d82e513916f6ced5042486c6dc7d21"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 8: Particle Physics"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 8.5.1, Page 360"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable declaration\n",
"# Proton and antiproton annihilate to produced three pions\n",
"E_p = 938; # Energy of proton, MeV\n",
"E_pi = 139.5; # Energy of pions, MeV\n",
"E_pi_0 = 134.9; # Energy of pi_0_ion, MeV\n",
"\n",
"#Calculations\n",
"E_KE = (2*E_p-(2*E_pi+E_pi_0))/3; # The average kinetic energy of each pions, MeV\n",
"\n",
"#Result\n",
"print \"The average kinetic energy of each pions : %5.1f MeV\"%E_KE\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The average kinetic energy of each pions : 487.4 MeV\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 8.5.2, Page 360"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable declaration\n",
"# Here r_1 and r_2 are two decay rates are given\n",
"# Declare the cell\n",
"R1 = [[0,0],[0,0]]\n",
"R1[0][0] = 'r_1'\n",
"R1[0][1] = 'r_2'\n",
"\n",
"#Calculations&Results\n",
"print \"The inherent uncertainity in mass of particle = h(%s + %s) \"%(R1[0][0], R1[0][1]) "
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The inherent uncertainity in mass of particle = h(r_1 + r_2) \n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 8.7.3, Page 362"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Variable declaration\n",
"# Declare cell for the given reaction\n",
"R1 = [[0,0,0,0,0],[0,0,0,0,0],[0,0,0,0,0],[0,0,0,0,0],[0,0,0,0,0],[0,0,0,0,0],[0,0,0,0,0]]\n",
"# Enter data for the cell\n",
"R1[0][0] = 'p'\n",
"R1[0][1] = 1 \n",
"R1[0][2] = 1\n",
"R1[0][3] = 0\n",
"R1[0][4] = 1./2\n",
"R1[1][0] = 'K_+'\n",
"R1[1][1] = 1\n",
"R1[1][2] = 0\n",
"R1[1][3] = 1\n",
"R1[1][4] = 1./2\n",
"R1[2][0] = 'S_+'\n",
"R1[2][1] = 1\n",
"R1[2][2] = 1\n",
"R1[2][3] = -1\n",
"R1[2][4] = 1\n",
"R1[3][0] = 'pi_-'\n",
"R1[3][1] = -1\n",
"R1[3][2] = 0\n",
"R1[3][3] = 0\n",
"R1[3][4] = 1\n",
"R1[4][0] = 'S_0'\n",
"R1[4][1] = 0\n",
"R1[4][2] = 1\n",
"R1[4][3] = -1\n",
"R1[4][4] = 0\n",
"R1[5][0] = 'p_-'\n",
"R1[5][1] = -1\n",
"R1[5][2] = -1\n",
"R1[5][3] = 0\n",
"R1[5][4] = 1./2\n",
"R1[6][0] = 'n_0'\n",
"R1[6][1] = 0\n",
"R1[6][2] = 0\n",
"R1[6][3] = 0\n",
"R1[6][4] = 0\n",
"\n",
"\n",
"#Calculations&Results\n",
"def check_Isotopic_no(Ir_sum,Ip_sum):\n",
" if Ir_sum == Ip_sum:\n",
" f = 1;\n",
" else: \n",
" f = 0;\n",
" return f\n",
"\n",
"\n",
"# Declare a function returning equality status of proton number\n",
"def check_strangeness(sr_sum,sp_sum):\n",
" if sr_sum == sp_sum:\n",
" f = 1;\n",
" else:\n",
" f = 0;\n",
" return f\n",
" \n",
"def check_charge(cr_sum,cp_sum):\n",
" if cr_sum == cp_sum:\n",
" f = 1;\n",
" else:\n",
" f = 0;\n",
" return f\n",
" \n",
"# Declare a function returning equality status of lepton number\n",
" \n",
"#Reaction-I\n",
"print \"\\n\\nReaction-I:\\n\\n\"\n",
"Ir_sum = R1[0][4]+R1[0][4];\n",
"Ip_sum = R1[1][4]+R1[2][4];\n",
"if (check_Isotopic_no(Ir_sum,Ip_sum) == 0):\n",
" print \"The Reaction\\n\"\n",
" print \"\\t%s + %s --> %s + %s \\nis not possible\"%(R1[0][0],R1[0][0],R1[1][0],R1[2][0])\n",
"\n",
"#Reaction-II\n",
"print \"\\n\\nReaction-II\"\n",
"sr_sum = R1[0][3]+R1[3][3];\n",
"sp_sum = R1[4][3]+R1[6][3];\n",
"if (check_strangeness(sr_sum,sp_sum)== 0):\n",
" print \"\\nThe Reaction\\n\"\n",
" print \"\\t%s + %s --> %s + %s \\nis not possible\"%(R1[0][0],R1[3][0],R1[4][0],R1[6][0])\n",
"\n",
"#Reaction-III\n",
"print \"\\n\\nReaction-III:\\n\\n\"\n",
"cr_sum = R1[0][1]+R1[0][1];\n",
"cp_sum = R1[0][1]+R1[0][1]+R1[0][1]+R1[5][1]; \n",
"if (check_charge(cr_sum,cp_sum) == 1):\n",
" print \"The Reaction\\n\"\n",
" print \"\\t%s + %s --> %s + %s + %s \\nis possible\"%(R1[0][0],R1[0][0],R1[0][0],R1[0][0],R1[5][0]) \n",
" "
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"\n",
"\n",
"Reaction-I:\n",
"\n",
"\n",
"The Reaction\n",
"\n",
"\tp + p --> K_+ + S_+ \n",
"is not possible\n",
"\n",
"\n",
"Reaction-II\n",
"\n",
"The Reaction\n",
"\n",
"\tp + pi_- --> S_0 + n_0 \n",
"is not possible\n",
"\n",
"\n",
"Reaction-III:\n",
"\n",
"\n",
"The Reaction\n",
"\n",
"\tp + p --> p + p + p_- \n",
"is possible\n"
]
}
],
"prompt_number": 2
}
],
"metadata": {}
}
]
}
|
