Given past history, I don't expect a reply back for the time being, but for the sake of clarity:
The very large heat of condensation of hydrogen to the ultra-dense form would not be nuclear, but it would still be considerably larger than ordinary chemical processes. Since I finally had the opportunity to have a very simple and safe system where flowing hydrogen could be continuously admitted through and over the catalytic material at high temperature, that seemed an obvious first test, although I realize there may be difficulties due to the inherent magnetic field and other non-optimal factors like excessive total pressure.
See: https://doi.org/10.1016/j.ijhydene.2021.02.221
Quote[...] It is possible to have an energy output by forming H(0) from hydrogen gas. This condensation energy will easily be believed to be non-chemical thus nuclear due to its size (of the order of hundred times larger than normal chemical energy output). It may be a large part of the energy which is considered to be caused by so-called cold fusion, as suggested previously by Winterberg [6,7]. Other nuclear reactions in H(0) may be the main processes considered to be cold fusion, with very little of normal fusion products like 4He and neutrons out.
That's also the basis for how Randell Mills has been suggesting to harness energy from his Hydrino, even if Holmlid (in the same paper) does not think that the Hydrino concept has been convincingly demonstrated so far.
Again: https://doi.org/10.1016/j.ijhydene.2021.02.221
Quote[...] Other forms of hydrogen H have been proposed to exist but have not been convincingly observed or deeply studied. The most discussed case may be the hydrinos proposed by R. Mills [4] with very little experimental evidence. The proposed hydrinos have no resemblance to H(0). Further, based on quantum mechanical calculations a form of picometer-sized hydrogen molecule was proposed by Mayer and Reitz [5] to exist at high pressure. These proposed molecules are similar to H(0) in some respects, and may well exist, at least transiently.
Since again from the same paper it is also suggested that ordinary catalytic reactors may be emitting muons (which sounded promising for the very basic system shown above and more professionally crafted catalytic microreactors), and that muon detection could be a method for detecting H(0) I am now trying simple detection methods in this regard (e.g. CMOS/CCD sensor detection), which may not be selective to the radiation emitted by the material but could potentially give more information in other ways.
Read: https://doi.org/10.1016/j.ijhydene.2021.02.221
Quote[...] It is expected that catalysts used in many existing large-scale industrial processes form H(0), but that these species has remained unobserved in these processes due to lack of suitable methods for its detection. One possibility could be to measure the muon emission [9] from the catalytic reactors, but it is not known to us if such experiments have been attempted. There are also several problems with such an approach: 1) most muon detectors are not selective and any energetic nuclear particle will give a similar detector response; however muon capture may give characteristic X-ray spectra from negative muons in suitable materials [89], 2) the negative muons will give nuclear reactions in many materials and to some extent even in hydrogen gas, thus few muons will be able to leave the catalytic reactor before they decay with a time constant of 2.20 μs [16].
Putting a few thousands euro into a suitable photomultiplier tube-based fast custom detection system is not economically feasible for me at the moment, even if it was shown to work for muon detection from H(0) by Holmlid and Ólafsson in a few published papers.