There is a fine peer-reviewed but overlooked paper written by Hagelstein, Letts and Cravens in the LERN library:
https://www.google.com/url?q=http://www.lenr-canr.org/acrobat/Hagelsteinmode lingexa.pdf&sa=U&ved=0ahUKEwiyzvqj4aTLAhVW9mMKHY-eCFwQFggRMAY&client=interna l-uds-cse&usg=AFQjCNFx0766edAQgGStoAW75O5utLyTUg Although ostensibly different from the glow-tube, as an experiment this paper could have relevance especially when a glow tube is fueled using deuterium (LAD instead of LAH). This is especially true if a small signal of anomalous high energy photons are seen in the range of 2.6 2.8 MeV along with more IR than there should be there (which is always the case with the glow-tube). Hagelstein explains a mechanism for optical phonons and reversible up conversion of IR (High harmonics) and also, at a common signature for deuterium reactions. Although the wavelengths groupings are extremely disproportionate (25 THz and 2.7 MeV) the same kind of frequency disproportion is also a feature of the Mössbauer effect). The experiment suggests nuclear energy is converted to optical phonons in the lattice, which is related to incandescence. Optical phonons are called infrared active and are Raman active. Presumably there is reversibility, low loss and positive feedback, exactly as in Mössbauer. Alan G has stated that he wanted to do deuterium next, but it is not clear if and when this will happen. In the paper above, Letts and Cravens used two lasers in order to achieve the IR beat frequency which had been predicted by NASA for SPP formation, which is similar to what is seen in an incandescent glow (glow reactor) at 1200C. These IR photons are be in the range of 25-30 THz. That seems to be a sweet spot for SPP which then translates into densification of deuterons, leading to nuclear reactions. The important part of the Hagelstein paper for understanding what could be happening in the glow-tube reactor, IF (big if) high energy radiation is seen in the range of 2.7 MeV is the mechanism. A high energy signal (gamma or x-ray, doesnt matter) is produced from IR and to a lesser extent, from the nuclear reaction itself. The spectrum can be seen on slide 31. Now there is an apparent target signature to look for, at least when deuterium is the fuel (it would be a much different signature for protium). If this signature should show itself in glow tube testing, it would be a huge advancement in understanding even if the counts are low (they are expected to be low). I am surprised Hagelstein does not mention Mössbauer and bases everything on Corkum, but maybe that is due to spatial constraints in a slide presentation. Jones
