D+D reaction generates 14MeV neutrons that scapes from the reactor loosing its energy that could perform more useful chain reactions. The neutrons damages also the reactor container and generates radioactive isotopes increasing the operation cost.
Using a high pressure perhaps the cross section of D would be enought to capture neutrons to generate tritium that would react inmediatly whith other deuteriums.
The reactor size is between 10um and 2mm.
This study would will be useful in the design and operation of the Pulsotron-3 fusion testing device.
I don't think that just rising the pressure will be sufficient - those 14 MeV neutrons have a very small cross section even with solids (lead for example does not shield neutrons effectively even with its high density).
Cadmium or Boron are good absorbers for neutrons but only for slow ones (so some 100 meV at most).
You must be right, to increase the matter density 10 folds over solid would not help enough
D+D reaction never give 14.1 MeV neutrons instad 2.45 Mev neutrons
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