No evidence for enhanced (d,d) fusion under (CD4)n+ cluster impact

Possible enhancement of (d,d) nuclear fusion rate under clusters impact has been investigated. (CD4)n+ cluster were sent onto deuterated polyethylene targets and protons resulting from fusion were detected. Using light clusters (n from 1 to 5) of constant velocity we measured essentially constant proton yields per incident deuteron, i.e., observed no deviation from binary (d,d) fusion cross sections. With heavier clusters (n=110,145) we could only determine upper limits of proton yields which seem to be entirely accounted for by beam contamination