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9 Cards in this Set
- Front
- Back
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Conclusions from Rutherford scattering 1- empty |
Atoms must be empty space because most alpha particles go straight through |
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Conclusions from Rutherford scattering 2 - charge |
Nucleus must have a large positive charge as some positive alpha particles are repelled and deflected at large angles |
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Conclusions from Rutherford scattering 3 size |
Nucleus must be small as very few particles are deflected |
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Conclusions from Rutherford scattering 4 mass |
Mass must be concentrated in the nucleus since high momentum alpha particles are deflected too |
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Rutherford scattering experiment |
A stream of alpha particles from a radioactive source fired at very thin gold foil, a circular fluorescent screen placed around the foil to detect the angle that the alpha particle is deflected by |
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Radius of an atomic nucleus is around.... |
1 fm |
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Equation linking radius of the nucleus and nucleon number |
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Sources of background radiation |
Air Ground and buildings Cosmic radiation Living things Man made radiation |
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Sources of background radiation |
Air Ground and buildings Cosmic radiation Living things Man made radiation |
