| 21. | Alpha particles are a highly ionizing form of particle radiation.
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| 22. | :Alpha particles are nothing more nothing less than helium nuclei.
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| 23. | The radioactive source emits alpha particles into both chambers, which ionizes some air molecules.
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| 24. | Short-range alpha particles emitted by the metal kill cancer cells.
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| 25. | However alpha particles are easily attenuated if the active layer is made too thick.
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| 26. | Alpha particles are shielded by even light amounts of material.
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| 27. | The alpha particles from the radium cause neutrons to be emitted from the beryllium.
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| 28. | They are almost always killed by a single alpha particle.
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| 29. | Due to the release of alpha particles, Thorotrast was found to be extremely carcinogenic.
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| 30. | In 1910 Ernest Rutherford and Hans Geiger published experimental results on counting alpha particles.
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