, Volume 96, Issue 1, pp 135–142

Triple tracks in CR-39 as the result of Pd–D Co-deposition: evidence of energetic neutrons


    • SPAWAR Systems Center Pacific
  • Stanislaw Szpak
    • SPAWAR Systems Center Pacific
  • Frank E. Gordon
    • SPAWAR Systems Center Pacific
  • Lawrence P. G. Forsley
    • JWK International Corp.
Short Communication

DOI: 10.1007/s00114-008-0449-x

Cite this article as:
Mosier-Boss, P.A., Szpak, S., Gordon, F.E. et al. Naturwissenschaften (2009) 96: 135. doi:10.1007/s00114-008-0449-x


Since the announcement by Fleischmann and Pons that the excess enthalpy generated in the negatively polarized Pd–D-D2O system was attributable to nuclear reactions occurring inside the Pd lattice, there have been reports of other manifestations of nuclear activities in this system. In particular, there have been reports of tritium and helium-4 production; emission of energetic particles, gamma or X-rays, and neutrons; as well as the transmutation of elements. In this communication, the results of Pd–D co-deposition experiments conducted with the cathode in close contact with CR-39, a solid-state nuclear etch detector, are reported. Among the solitary tracks due to individual energetic particles, triple tracks are observed. Microscopic examination of the bottom of the triple track pit shows that the three lobes of the track are splitting apart from a center point. The presence of three α-particle tracks outgoing from a single point is diagnostic of the 12C(n,n′)3α carbon breakup reaction and suggests that DT reactions that produce ≥9.6 MeV neutrons are occurring inside the Pd lattice. To our knowledge, this is the first report of the production of energetic (≥9.6 MeV) neutrons in the Pd–D system.



Supplementary material

114_2008_449_MOESM1_ESM.doc (352 kb)
ESM 1(DOC 266 KB)

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© Springer-Verlag 2008