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Nuclear Physics Md. Atiqur Rahman Ahad

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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?. - PowerPoint PPT Presentation

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Page 1: Nuclear Physics

Nuclear Physics

Md. Atiqur Rahman Ahad

Page 2: Nuclear Physics

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?

Page 3: Nuclear Physics

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.

Page 4: Nuclear Physics

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.

Page 5: Nuclear Physics

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.

Page 6: Nuclear Physics

Use of Nuc Energy

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

Page 7: Nuclear Physics

Some nuclear reactors

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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)

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Fat man

Page 16: Nuclear Physics

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

• Fuel heats water & turns it into steam. • The pressure of the steam spins 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.

Page 17: Nuclear Physics