Nuclear Physics

The Nuclear Reactor

The Nuclear Reactor For large-scale energy release due to fission, one fission event must trigger others, so that the process spreads throughout the nuclear fuel like flame through a log. The fact that more neutrons are produced in fission than are consumed raises the possibility  of just such a chain reaction, with each  that is produced …

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Beta Decay

Beta Decay A nucleus that decays spontaneously by emitting an electron or a positron (a positively charged particle with the mass of an electron) is said to undergo beta decay. Like alpha decay, this is a spontaneous process, with a def nite  disintegration energy  and half-life. Again like alpha decay, beta decay is a statistical process, governedby …

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Alpha Decay

Alpha Decay When a nucleus undergoes alpha decay, it transforms to a ‘different nuclide by emitting an alpha particle (a helium nucleus, 4He). For example, when uranium 238U undergoes alpha decay, it transforms to thorium This alpha decay of 238U can occur spontaneously (without an external source of energy) because the total mass of the  decay products 234Th …

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Radioactive Decay

Radioactive Decay  Most of the nuclides that have been identified are radioactive. A radioactive nuclide spontaneously emits a particle, transforming itself in the process into a different nuclide. occupying a different square on the nuclidic  hart. Radioactive decay provided the first evidence that the laws that govern the subito ic world are statistical. Consider, for example. a I …

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