Understanding theradioactivity at Fukushima           A physics and engineering perspective                 Prof. Ben Monr...
• Introduction to radioactivity  • Radiation hazards and health  • What escapes in a meltdown?  • Where does it go?  • How...
Periodic Table of the Elements                                                           Chemistry Reference Sheet        ...
230 keV     126.5 ms        19.255 s       20.39 m                                     5730 y                             ...
230 keV     126.5 ms        19.255 s       20.39 m                                     5730 y                             ...
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
Understanding the  radioactivity at Fukushima
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Understanding the radioactivity at Fukushima

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Understanding the
radioactivity at Fukushima
A physics and engineering perspective
Prof. Ben Monreal
UCSB Department of Physics

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Understanding the radioactivity at Fukushima

  1. 1. Understanding theradioactivity at Fukushima A physics and engineering perspective Prof. Ben Monreal UCSB Department of Physics Q&A Panel: Ben Monreal Prof. Theo Theofanous, UCSB Chem E. Prof. Patrick McCray, UCSB HistoryBen Monreal, UCSB Physics 3/11
  2. 2. • Introduction to radioactivity • Radiation hazards and health • What escapes in a meltdown? • Where does it go? • How worried should we be?Ben Monreal, UCSB Physics 3/11
  3. 3. Periodic Table of the Elements Chemistry Reference Sheet California Standards Test 1 18 1A 8A 1 H 1 Hydrogen 2 “Tritium” (hydrogen) 13 14 15 16 17 He 2 Helium 1.01 2A Key 3A 4A 5A 6A 7A 4.00 3 4 5 6 7 8 9 10 11 Atomic number 2 Li Be Na Element symbol B C N O F Ne Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon 6.94 9.01 Sodium Element name 10.81 12.01 14.01 16.00 19.00 20.18 22.99 11 12 Average atomic mass* 13 14 15 16 17 18 3 Na Mg Al Si P S Cl Ar Sodium Magnesium 3 4 5 6 7 8 9 10 11 12 Aluminum Silicon Phosphorus Sulfur Chlorine Argon 22.99 24.31 3B 4B 5B 6B 7B 8B 1B 2B 26.98 28.09 30.97 32.07 35.45 39.95 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton 39.10 40.08 44.96 47.87 50.94 52.00 54.94 55.85 58.93 58.69 63.55 65.39 69.72 72.61 74.92 78.96 79.90 83.80 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon 85.47 87.62 88.91 91.22 92.91 95.94 (98) 101.07 102.91 106.42 107.87 112.41 114.82 118.71 121.76 127.60 126.90 131.29 55 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 6 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Cesium Barium Lanthanum Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury Thallium Lead Bismuth Polonium Astatine Radon Iodine 132.91 137.33 138.91 178.49 180.95 183.84 186.21 190.23 192.22 195.08 196.97 200.59 204.38 207.2 208.98 (209) (210) (222) 87 88 89 104 105 106 107 108 109 7 Fr Ra Ac Rf Db Sg Bh Hs Mt Francium Radium Actinium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Cesium (223) (226) (227) (261) (262) (266) (264) (269) (268) * If this number is in parentheses, then 58 Ce Cerium 140.12 59 Pr Praseodymium 140.91 60 Nd Pm 61 62 Sm Neodymium Promethium Samarium 144.24 (145) 150.36 Uranium and Plutonium 63 Eu Europium 151.96 64 Gd Gadolinium 157.25 65 Tb Terbium 158.93 66 Dy Dysprosium 162.50 67 Ho Holmium 164.93 68 Er Erbium 167.26 69 Tm Thulium 168.93 70 Yb Ytterbium 173.04 71 Lu Lutetium 174.97 it refers to the atomic mass of the 90 91 92 93 94 95 96 97 98 99 100 101 102 103 most stable isotope. Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium 232.04 231.04 238.03 (237) (244) (243) (247) (247) (251) (252) (257) (258) (259) (262)Copyright © 2008 California Department of Education
  4. 4. 230 keV 126.5 ms 19.255 s 20.39 m 5730 y 6 +2+4-4 12.0107 0.033% 0+ (3/2-) ECp,ECp2",... EC 0+ EC 3/2- 0+ 98.90 1/2- 1.10 !- 0+ 2 2075° 3 B 4000° B7 B8 B9 B10 B11 B12 B13 Boron 1.4 MeV 770 ms 0.54 keV 20.20 ms 17.36 ms 5 +3 10.811 -8 6.9#10 % (3/2-) 2+ EC2" 2p" 3/2- 3+ 19.9 3/2- 80.1 !-3" 1+ !-n 3/2- 2 1287° 2 Be 2471° Be5 Be6 Be7 Be8 Be9 Be10 Be11 Be12 92 keV 53.29 d 6.8 eV 1.51E+6 y 13.81 s 23.6 ms Beryllium 9.012182 4 +2 0+ 3/2- 0+ 3/2- 0+ 1/2+ 0+ -9 2.38#10 % 2p EC 2" 100 !- !-" !- 2 180.5° 1 Li 1342° Li4 Li5 Li6 Li7 Li8 Li9 Li10 Li11 1.5 MeV 838 ms 178.3 ms 1.2 MeV 8.5 ms Lithium 3 +1 6.941 2- 3/2- 1+ 3/2- 2+ 3/2- 3/2-elementsDifferent 1.86#10 -7% p 7.5 92.5 !-2" !-n n !-n,!-2n,... 2 -272.2° He -268.93° He3 He4 He5 He6 He7 He8 He9 He10 Helium -267.96° 0.60 MeV 806.7 ms 160 keV 119.0 ms 0.30 MeV 0.3 MeV 2 0 4.002602 8.9% 1/2+ 0.000137 0+ 99.999863 n 3/2- !- 0+ n (3/2)- !-n 0+ n (1/2-) n 0+ 1 -259.34° H -252.87° H1 H2 H3 H4 H5 H6 Hydrogen 1 1.00794 +1-1 91.0% -240.18° 1/2+ 99.985 1+ 0.015 !- 12.33 y 1/2+ 2- 6 8 n1 !- 614.8 s 1/2+ 2 4 Different isotopes Ben Monreal, UCSB Physics 3/11 http://nndc.lbl.gov
  5. 5. 230 keV 126.5 ms 19.255 s 20.39 m 5730 y 6 +2+4-4 12.0107 0.033% 0+ (3/2-) ECp,ECp2",... EC 0+ EC 3/2- 0+ 98.90 1/2- 1.10 !- 0+ 2 2075° 3 B 4000° B7 B8 B9 B10 B11 B12 B13 Boron 1.4 MeV 770 ms 0.54 keV 20.20 ms 17.36 ms 5 +3 10.811 -8 6.9#10 % (3/2-) 2+ EC2" 2p" 3/2- 3+ 19.9 3/2- 80.1 !-3" 1+ !-n 3/2- 2 1287° 2 Be 2471° Be5 Be6 Be7 Be8 Be9 Be10 Be11 Be12 92 keV 53.29 d 6.8 eV 1.51E+6 y 13.81 s 23.6 ms Beryllium 9.012182 4 +2 0+ 3/2- 0+ 3/2- 0+ 1/2+ 0+ -9 2.38#10 % 2p EC 2" 100 !- !-" !- 2 180.5° 1 Li 1342° Li4 Li5 Li6 Li7 Li8 Li9 Li10 Li11 1.5 MeV 838 ms 178.3 ms 1.2 MeV 8.5 ms Lithium 3 +1 6.941 2- 3/2- 1+ 3/2- 2+ 3/2- 3/2-elementsDifferent 1.86#10 -7% p 7.5 92.5 !-2" !-n n !-n,!-2n,... 2 -272.2° He -268.93° He3 He4 He5 He6 He7 He8 He9 He10 Helium -267.96° 0.60 MeV 806.7 ms 160 keV 119.0 ms 0.30 MeV 0.3 MeV 2 0 4.002602 8.9% 1/2+ 0.000137 0+ 99.999863 n 3/2- !- 0+ n (3/2)- !-n 0+ n (1/2-) n 0+ 1 -259.34° H -252.87° H1 H2 H3 H4 H5 H6 Hydrogen 1 1.00794 +1-1 91.0% -240.18° 1/2+ 99.985 1+ 0.015 !- 12.33 y 1/2+ 2- 6 8 n1 !- 614.8 s 1/2+ 2 4 Different isotopes Ben Monreal, UCSB Physics 3/11 http://nndc.lbl.gov
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