Karnataka Arts, Science & Commerce College, Bidar

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Presentation transcript:

Karnataka Arts, Science & Commerce College, Bidar Nuclear Energy Sri. S. P. Janwadkar Associate Professor Department of Physics Karnataka Arts, Science & Commerce College, Bidar Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

Nuclear Fission Nuclear fission is the process of splitting a nucleus into two nuclei with smaller masses. Fission means “to divide” Remember that fission has 2 s’s, therefore it splits into TWO parts. Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

Fission cont. Only large nuclei with atomic numbers above 90 can undergo fission. Products of fission reaction usually include two or three individual neutrons, the total mass of the product is somewhat less than the mass of Uranium-235. Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

Chain Reaction A chain reaction is an ongoing series of fission reactions. Billions of reactions occur each second in a chain reaction. Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

Chain Reaction cont. On earth, nuclear fission reactions take place in nuclear reactors, which use controlled chain reactions to generate electricity. Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

Chain Reaction cont. Uncontrolled chain reactions take place during the explosion of an atomic bomb. Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

Fission Products The products of nuclear fission reactions are radioactive, but the energy released from these reactions is less harmful to the environment than the use of fossil fuels. The products are intensely radioactive and must be treated and/or stored. Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

Nuclear Fusion Nuclear fusion is the combining of two nuclei with low masses to form one nucleus of larger mass. Nuclear fusion reactions are also called thermonuclear reactions. Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

Nuclear Fusion cont. Fusion reactions exist in stars. Our sun is a good example of a thermonuclear (fusion) reaction. It is almost impossible to create fusion reactions on earth since they need temperatures above one million degrees Celsius in order to take place. Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

Nuclear Fusion cont. Nuclear fusion produces less nuclear waste than nuclear fission and the materials are easier to obtain. Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

Advantages of Nuclear Energy Produces Large Amount of Energy 'Green' Energy No Air Pollution Fuel Independence Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

Disadvantages of Nuclear Energy Radiation Nonrenewable Huge Building Cost Nuclear Power Plant Accidents Transport of Fuel and Waste Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar

THANK YOU Department of Physics, KARNATAKA ARTS, SCIENCE AND COMMERCE College, Bidar