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RobusEtCeleritas t1_iyvicsj wrote

Reply to comment by DoubleDot7 in Why not use hydrogen and deuterium in fusion reaction rather than tritium and deuterium? by Curious_user4445

It means that the Coulomb barrier is a little bit lower. It's unrelated to the stability tritium, it's just possible to make this reaction occur at a reasonable rate at lower temperatures.

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financial2k t1_izsx87h wrote

How much lower is this temperature?

Is the main motivation of using Tritium the lower temperature or actually the breeding reaction?

How far apart is the fusion temperature from the fusion ignition temperature and how is each one defined?

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RobusEtCeleritas t1_izt7by2 wrote

>How much lower is this temperature?

Here is the reactivity as a function of temperature for a few candidate reactions.

>Is the main motivation of using Tritium the lower temperature or actually the breeding reaction?

The main motivation is the temperature. Obtaining fuel for DD is not an issue, because there's plentiful deuterium in nature (seawater, for example). It's a nice benefit, and quite important for tritium, which is not found naturally in large amounts. We have to produce tritium somehow, and having the reactor breed its own fuel is a nice way to do that.

>How far apart is the fusion temperature from the fusion ignition temperature and how is each one defined?

Not sure what you mean here.

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financial2k t1_iztmlqb wrote

Thanks.

How far apart is the fusion temperature from the fusion ignition temperature and how is each one defined?

This was answered in a comment below somewhere. perhaps even by you

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