You clearly wrote :: D = n + p..... No disintegration.....For the later you need 2.25MeV quite normal temperature...
The operation is not a crossproduct or multiplication. It was a (particle) chemical mass balance. The operator is plus +. Meant to show photodisintegration. Hence, the need for above 2.2 MeV.
You are right that I should have found a way to include the energy to photodisintegrate on the D side of the equation. I just could not think of a way that would not be misleading. The phat photon mechanism generates the needed high energy input.
The cooperative (multibody) mechanism works to start the reaction and may explain lack of high energy output product. In this way it resembles Edmund Storms HYDROTON A Model of Cold Fusion - YouTube