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Nuclear Physics

Nuclear Physics. Md. Atiqur Rahman Ahad. Issues to study???. Green energy? Why nuc in BD? Only energy? What are the risky areas? Hiroshima-Nagasaki? Russia’s Ch.? JP’s Fukushima? Man-made disaster vs. Natural disaster? In BD – do we have experts? Nuc . Vs. Terrorism?.

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Nuclear Physics

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  1. Nuclear Physics Md. AtiqurRahmanAhad

  2. Issues to study??? • Green energy? • Why nuc in BD? • Only energy? • What are the risky areas? • Hiroshima-Nagasaki? • Russia’s Ch.? • JP’s Fukushima? • Man-made disaster vs. Natural disaster? • In BD – do we have experts? • Nuc. Vs. Terrorism?

  3. Nuclear Engineering • Nuclear Engineering is an endeavor that • makes use of radiation and radioactive material for the benefit of mankind. • Like their counterparts in chemical engineering, nuclear engineers endeavor • to improve the quality of life by manipulating basic building blocks of matter.

  4. Chem. vs. Nuc. • Unlike chemical engineers, nuclear engineers works with reactions that produce millions of times more energy per reaction than any other known material.

  5. Nuclear Energy • It is free from the problems of fossil fuels: greenhouse gas emissions. • A typical 1000 MW coal-burning plant emits yearly: 1,00,000 tons of SO2 75,000 tons of NOx 5,000 tons of fly ash • USA generates 20% of the electricity; it avoided in 1999 the emission of 150 million tonnes of CO2  On the contrary, there is still the association of nuclear power with the tremendous destructive force.

  6. Use of Nuc Energy • Energy generation (electricity, heating) • Propulsion of naval vessels • Nuclear-powered spacecraft • Production of radioisotopes • Bomb! • Medicine • Agriculture

  7. Some nuclear reactors

  8. Little boy at Hiroshima • 120 inches (300 cm) in length, 28 inches (71 cm) in diameter and weighed approximately 9,700 pounds (4,400 kg)

  9. Fat man

  10. Power Plant: Heat  Steam  Generator  Electricity • Power plants use heat supplied by a fuel to boil water and make steam, which drives a generator to make electricity. • A generating plant's fuel: • coal, gas, oil, uranium, solar thermal • Fuelheats water & turns it into steam. • The pressure of the steamspins the blades of a giant rotating metal fan called a turbine. • That turbine turns the shaft of a huge generator. • Inside the generator, coils of wire and magnetic fields interact - and electricity is produced.

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