| 11. | Water from rivers and lakes tends to contain less deuterium than seawater.
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| 12. | This was a pinch machine, with a cylinder full of deuterium.
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| 13. | Deuterium is a naturally occurring isotope of hydrogen and is commonly available.
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| 14. | It uses a chemical deuterium fluoride laser device producing infrared laser pulses.
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| 15. | As a hedge, development of liquid deuterium weapons continued in parallel.
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| 16. | This difference is exploited for enriching deuterium in heavy water.
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| 17. | The United States decided to choose liquid deuterium as their thermonuclear fuel.
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| 18. | Physicists hoped to achieve deuterium-tritium break-even in 1989.
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| 19. | Deuterium is also a potential fuel for commercial nuclear fusion.
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| 20. | A very prominent example is hydrogen and its isotope deuterium.
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