A Burn efficiency in Inertial Confinement Fusion

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TL;DR Summary
we have two different definitions for burn-up fraction related to inertial confinement fusion

the fraction of the target mass that burns

a fraction that is calculated on number densities
we have two different definitions for burn-up fraction related to inertial confinement fusion

the fraction of the target mass that burns

a fraction that is calculated on number densities

how are these two related in non-equimolar case?
 
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lia2 said:
TL;DR Summary: we have two different definitions for burn-up fraction related to inertial confinement fusion

the fraction of the target mass that burns

a fraction that is calculated on number densities

how are these two related in non-equimolar case?
One would consider the stoichiometry of the mixture. The key reaction is D+T (d+t), other side reactions would be d+d or t+t, which both have lower cross-sections (probability of interaction by fusion). So, one would try to maintain stoichiometry with nd = nt, usually as a mixed gas, or as DT molecule, which would then dissociate when entering the hot plasma.
 
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