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If they didn't release energy, they wouldn't happen. The alternative, nuclear reactions that require energy, clearly need said amount of energy, which has to come from somewhere, e.g. kinetic energy involved in the collision of two nuclei (even ones that release energy usually have a "barrier" and some amount of initial kinetic energy is needed to overcome ...


3

Very interesting question! In chemistry you spend lots of time discussing exothermic and endothermic reactions: when you put your reagents together, sometimes the reaction heats things up, and sometimes the reaction cools things down. Nuclear reactions are very different, in that essentially all spontaneous reactions studied in laboratories are exothermic. ...


1

Could anyone explain why the D+T inside the pellet is in two distinct regions? I assume you mean why is it in both vapor form (in the center) and solid (ice) form (layered in the shell). This is coupled to your second question regarding the lower density in the center. The general idea underlying ICF is to set up a hot-spot in the center of the ...



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