  In this brief report, we present laser induced breakdown spectroscopy (LIBS)
evidence of deuterium (D) production in a 3:1 urethane dimethacrylate (UDMA)
and triethylene glycol dimethacrylate (TEGDMA) polymer doped with resonant gold
nanorods, induced by intense, 40 fs laser pulses. The in situ recorded LIBS
spectra revealed that the D/(2D+H) increased to 4-8% in the polymer samples in
selected events. The extent of transmutation was found to linearly increase
with the laser pulse energy (intensity) between 2 and 25 mJ (up to 3x10^17
W/cm). The observed effect is attributed only to the field enhancing effects
due to excited localized surface plasmons on the gold nanoparticles.
