See:
http://lenr-canr.org/acrobat/RolisonDRanomaliesi.pdf
http://lenr-canr.org/acrobat/GuruswamySmetallurgi.pdf
Here are some remarkable statements from the latter:
"During the first week of May, 1989, frequent explosive popping of the
cells (Figure 2a) were observed, some with minimal damage and some with the
destruction of the assembly. The temperature excursions were associated
with some of these events which were initially dismissed as being due to
deuterium and oxygen recombination. Again in the third week of May, a large
temperature excursion of about 12°C was observed, the cell temperature rise
lasting about 90 minutes (Figure 2a). . . .
During the burst shown in Figure 2b, the cell was being operated in a
constant voltage mode and the voltage and current readings were manually
recorded. Explosive popping of the cell interrupted the large heat burst
and dislodged the electrodes. The cell was put back together immediately
and the cell temperature remained at a level well above the normal values
corresponding to the gross power input to the cell (about 9.6 Watts).
Thermal calibration curves showed that excess heat generated during these
two events were about 240,000 Joules during the 91 minute burst and around
1 MJ during the 40 minute burst followed by a 30 hour excess heat
generation at a lower level. During the bursts the power outputs were as
high as 6-7 times the input power which was less than 10 Watts. . . ."
- Jed