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| Home » Plasma Dictionary - T » Thermonuclear Fusion Or Thermonuclear Reactions |
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| Plasma Dictionary |
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| Plasma Dictionary - Terms Started With Alphabet T |
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Term : Thermonuclear Fusion or Thermonuclear Reactions
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Definition : These terms describe fusion reactions achieved by heating the fuel into the plasma state to the point where ions have sufficient energy to fuse when they collide, typically requiring temperatures of at least 1 million K. Thermonuclear fusion converts a small amount of the mass of the reactants into energy via E = mc2, and is the process by which most types of stars (including the sun) produce the energy to shine. In these stars, gravity compresses and heats the core stellar plasma until the power released from fusion balances the power radiated from the star; the star then reaches an equilibrium where thermonuclear fusion reactions sustain the internal pressure of the star in balance against the force of gravity. This prevents the star from collapsing, at least until it runs out of fusion fuel. On earth, controlled thermonuclear fusion reactions represent a possible long-term source of energy for humanity, though research remains decades away from economical fusion power. ``Uncontrolled'' fusion provides the immense power of thermonuclear weapons (``hydrogen bombs''). In controlled fusion research, the term ``thermonuclear'' is also used to characterize fusion reactions between thermal ions, as opposed to fusion reactions involving injected beam ions or other ions lying outside the thermal Maxwellian distribution.
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The Plasma Dictionary is based on the Fusion & Plasma Glossary that was originally created on FusEdWeb, Fusion Energy Educational Website which has additional introductory information on plasma and fusion science . Click on the first letter of the word you would like to look up
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| Planet Dictionary |
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A planet (from the Greek planete means "wanderer" or
more forcefully "vagrant, tramp") is an object in orbit around a star
that is not a star in its own right. Much like "continent," "planet"
is a word without a precise definition, with history and culture playing
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| Dictionary of Chemical Terminology |
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| Dictionary of Commonly Confused Words |
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A science that deals with the history of the earth as recorded in rocks.
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