Reports on cold fusion using ordinary light hydrogen indicate:
1. A short duration burst of gamma ray is produced when the reaction commences and when it ends.
2. When the reaction is proceeding, the bremsstrahlung is in the near infrared providing useful heat.
3. Helium-3 is produced, as is detected by firing a laser at a sample to free it.
4. Protons are emitted, as detected by tracks in a cloud chamber.
5. Positrons are not emitted, as indicated by the lack of radiation that would be produced from their annihilation.
6. The proton conductor used must be more than 3 nanometers in size. The size of particles used is said to be approximately 10 nanometers.
7. The length of time required for the reaction to turn on increases with rapidly with the length of the proton conductor.
8. A wide spectrum of other transmutations occur, but mostly iron, copper and a little tin.
9. In nickel experiments, special tubules, i.e., defects in the lattice, are manufactured to facilitate the reaction.
10. The nickel used is enriched with more of the heavier isotopes.
11. Pulses are applied to stimulate the process in self-sustaining mode. In non self-sustaining mode, application of current through a resistive element is used to sustain and control the process.
12. Many catalysts have been tried in attempts to facilitate the process. Raney nickel to produce monatomic hydrogen by Dark Light. Alloys of copper, nickel and zirconium have been used by Ames National Laboratory.
13. Boron is said used technical reasons not related to enhancing the reaction.
There are 500 theories about why it works and 500 why it does not. That is probably about the same as for room temperature superconductors. I hope it does not go the way of Texas Instruments Digital Micro-mirror Device from the year 1987. I am still waiting for a laser version that is reliable and costs less than $5999.