An important question about the Rossi reaction (as epitomized by that powerful image of the glowing HotCat) - is in the context of identifying whether or not its thermal gain is expressed in the soft x-ray spectrum. Gain cannot be seen in a higher spectrum, so soft x-rays is the best bet.
Determining this may involve both reflectance and transmission of photons in a narrow range. Due to Rydberg ionization values of Nickel, in the context of CQM theory, the photon radiation in question could be ~300 eV. There is a fair chance that this involves a limited chain reaction similar to a version of the Mossbauer effect. Once we know the spectrum in which the Rossi gain originates, it will be easier to frame an accurate theory. There is evidence of transmission of soft x-rays through SiC, SiN and stainless at 800 C. Even if the rate of transmission is low (ppm ?) the possibility of detection could still be significant - to the extent that this radiation can be intensified and focused by mirroring. Can it be focused? The knee-jerk reaction is NO - since UV light in an nearby spectrum is universally absorbed by all elements, making detection difficult. With soft x-rays, however, as opposed to EUV- we seem to be lucky. Soft x-ray mirroring is a reality, at least in Space. Thus - aside from practical applications of how to convert the gain into electricity, mirroring points to an easy way to falsify the hypothesis of the soft x-ray spectrum. The region of interest would be measurements from about 4-6 nanometers. As fate would have it - nickel has been chosen as a thin-film reflective coating in NASA Satellites for use with optical systems in this range, as far back as the sixties. Thus we know the low angle reflectance of nickel for 4 nm wavelength x-rays is about 45 % which is more than adequate- if not extraordinary, given that for UV at 40 nm, it is zero. This also has relevance for what is going on inside the Rossi reactor - in the sense of a "photon chain reaction" which is a softer variation of the Mossbauer effect. More on that later. Nickel film - as parabolic trough mirror, surrounding the Rossi HotCat should be able to intensify the soft x-ray emittance by a large factor, perhaps up to 10,000,000 to one as felt by a detector. Although the chance of soft x-rays getting through all of those external layers of the HotCat seems slim, even the slight possibility is worth investigating since $100 of nickel foil, and the proper photocells (on loan from NIST) is all that one would need to discover a very important detail. Jones
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