It is worth repeating that in Holmlid’s article cited by Axil, we find several problems with his claim of copious muon production (aside from the massive transfer of energy which becomes undetectable).
Holmlid: “The muons formed do not decay appreciably within the flight distances used here. Most of the laser-ejected particle flux with MeV energy is not deflected by the magnetic fields and is thus neutral, either being neutral kaons or the ultra-dense hydrogen precursor clusters. Photons give only a minor part of the detected signals.” This “neutral flux” is troubling to many observers (including Bob Higgins) because muons are charged and the processor states (pions, kaons) will be effectively charged as well. However, this could explain a characteristic pink noise which is much attenuated over the main event (the massive level of white noise which is not detected). Not only that, since muons are presumably produced from protons in the laser pulse, there should be a preponderance of antimuons in order to preserve conservation of charge. Typically, the kludge used to preserve charge and lost mass is the neutrino which occurs in the final decay. In fact most of the massively excess energy of the Holmlid effect – almost all of it – eventually converts into neutrinos which are lost to the system (insofar as being useful for energy conversion). This is a curious situation since a massively energetic pulse of energy has occurred due to proton annihilation (not proton decay) and this comes from the laser irradiation, but it is lost to the system due to the fact that 99.5% has been converted into neutrinos in nanoseconds – and at a great distance away - which cannot be easily used. Bummer. The only silver lining of the incredible Holmlid finding is (or could be) in the “cannot be easily used” part. Maybe the proper material is out there but we haven’t been looking in the right place for it. Dense metals respond to neutrinos better than light metals for instance but little work has been done on “ultradense” materials. In fact there is the possibility that new discoveries in the future will in fact turn up a metamaterial which absorbs neutrinos ! What would such a material look like? First, it will be extremely dense – far denser than uranium. That is a big clue. Could UDH be both the target for laser pulses and an absorber of neutrino bursts? Perhaps as a U-hydride with UDH embedded? We live in interesting times, as they say...