Search for charged particle emissions from palladium-deuterium co-deposition
Palladium-Deuterium co-deposition, the simultaneous depositing of palladium and deuterium onto the cathode of an electrolytic cell from a heavy water source, has been reported as a reliable method for the initiation of cold fusion. Original SPAWAR Pd/D Co-Deposition results [1,2] suggested the emission of charge particles which would prove the nuclear nature of the reaction inside a palladium lattice.
We made a precise replication of the acrylic electrochemical cell from [1,2] and used a CR-39, and a solid-state particle detector to record evidence of charged particles. We examined whether conventional processes might account for some of the charged particle observations.
The earlier work suggests anomalous nuclear products are responsible for tracks observed on CR-39 detectors. CR-39 pits similar to those reported in [1,2] were found using both in-situ CR-39 and Mylar-protected CR-39. However, CR-39 protected by a combination of Mylar and a small air gap did not show any pits. Apparently, the electrolyte, as its chemistry changes during the electrolysis, is shown to damage the acrylic cell containing the experiment and to damage an aluminum foil separated from the electrolyte by a Mylar film. This chemical damage together with the absence of pits when a small air gap is added to the Mylar protection suggests chemical reactions were the source of the observed CR-39 pits. The absence of any detected charged particles using a YAP:Ce scintillation detector further supports the conclusion.
The results of this replication were delivered at 239th ACS National Meeting in San Francisco (2010) and at 31st Annual SSE Conference in Boulder (2012)
 P. Mosier-Boss et al, Eur. Phys. J. Appl. Phys. 40 293-303 (2007)  P. Mosier-Boss et al, Eur. Phys. J. Appl. Phys. 46 30901 (2009)