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Does the onset of fusion reactions inside stars require high or low density and high or low temperature?
Wiki User
∙ 13y ago
Starting the fusion reactions required high density and high heat.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoYes. both
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What reaction in giant stars for the fusion of hydrogen to form helium?
Fusion could occur with two deuterium nuclei, or one deuterium and one tritium. Helium would be formed in both cases, but does not take part in the fusion itself. The most likely reaction of deuterium and helium would be: D + He --> LiM --> D + D + D The "M" superscript indicates an excited metastable nucleus that instantly breaks apart. Another reaction is similarly likely: D + He --> LiM --> D + He Either way you are making no progress with fusion, the net reaction(s) probably even consumes energy instead of releasing it (my references don't supply energy figures for these reactions). Also such reactions would require higher temperature and pressure than DD or DT fusion do. Note: deuterium/helium-3 fusion does work and releases energy (at higher temperature and pressure than DD or DT fusion) but only produces helium and neutrons. Helium-3 is also rare. In practice, the original answer is absolutely right. However the above reactions will happen under conditions of temperature and pressure that permit D/He fusion, but as I already said they get nowhere, they are dead end reactions.
What are true reactions of the Sun?
They are fusion reactions, and The force to get the reactions to occur comes from gravity.
What is the explanation for the process of nuclear fusion?
Fusion reactions occur under immense pressures, such as those found in the centre of the sun. To artificially produce fusion reactions here on earth, we either use MCF (magnetic confinement fusion) or ICF (inertial confinement fusion) to create the pressure and temperature necessary for small elements to fuse together, releasing energy.
In which phase of matter do fusion reactions occur?
Plasma.
What chemical reaction produces the sun and energy?
These are not chemical reactions but thermonuclear reactions.
What does the onset of Fusion Reactions inside Stars require?
Sufficient quantity of hydrogen at a very high pressure and temperature
Nuclear reactions at very high temperature is known as?
You probably mean nuclear fusion
Hydrogen or carbon fusion reactions require the highest temp?
Carbon fusion requires much higher temperatures and pressures than ordinary hydrogen fusion.
Is fusion reaction limitless?
Fusion reactions are not limitless. The fusion process can exhaust the supply of fuel and cause fusion to stop. Additionally, there are fusion processes that are not exothermic, but are endothermic and require energy to be put in to sustain them. Without the requisite input energy, fusion ceases.
Why are fusion reactions difficult to recreate in a scientific laboratory?
Because of the very very high temperature and pressure required to get them started.
Is it a fission or fusion reaction?
Fission and fusion are different nuclear reactions.
Where does our sun get its energy from?
Fusion reactions
What are true reactions of the Sun?
They are fusion reactions, and The force to get the reactions to occur comes from gravity.
What reaction in giant stars for the fusion of hydrogen to form helium?
Fusion could occur with two deuterium nuclei, or one deuterium and one tritium. Helium would be formed in both cases, but does not take part in the fusion itself. The most likely reaction of deuterium and helium would be: D + He --> LiM --> D + D + D The "M" superscript indicates an excited metastable nucleus that instantly breaks apart. Another reaction is similarly likely: D + He --> LiM --> D + He Either way you are making no progress with fusion, the net reaction(s) probably even consumes energy instead of releasing it (my references don't supply energy figures for these reactions). Also such reactions would require higher temperature and pressure than DD or DT fusion do. Note: deuterium/helium-3 fusion does work and releases energy (at higher temperature and pressure than DD or DT fusion) but only produces helium and neutrons. Helium-3 is also rare. In practice, the original answer is absolutely right. However the above reactions will happen under conditions of temperature and pressure that permit D/He fusion, but as I already said they get nowhere, they are dead end reactions.
Solar energy is due to?
fusion reactions
Is solar energy is due to?
fusion reactions
How can temperature either help fusion to occur or prevent fusion from occurring?
How can temperature either help fusion to occur or prevent fusion from occurring?
