Cold fusion (LENR) revisited…

One of the nice things that happened to me on this rather weird exploration of the world of quantum physics – a journey which I now want to leave behind, because I found what I wanted to find: a common-sense interpretation of it all, and a concise model of elementary particles – was that, back in 2020, I was invited to join a low-key symposium on cold fusion (or ‘low energy nuclear reactions’, as the field is now referred to): RNBE-2020. That was followed by rather intense exchanges with a few scientists who work or worked on a theory centered around the concept of deep nuclear electron orbitals. All very interesting, because it confirmed what I think is the case in this field: there are some crooks around, but most research is done by very honest and integer scientists, albeit – admittedly – it’s all a bit on the fringes of mainstream theory.

I summed up my rather skeptical conclusions on these conversations in a 2021 blog post here: cold and hot fusion – just hot air? The ‘hot’ in the title of that post does not refer to real hot nuclear fusion (because that is not just ‘hot’ but extremely hot: we are not talking thousands but millions degrees Celsius here). No, we refer to the rather high temperatures of things like the hydrino scheme which – in my not-so-humble view – has seriously damaged the credibility of the field: these high temperatures are still – visibly – in the thermal range. Indeed, I looked at the videos, and I just see some kind of small copper alloy furnaces melting away. Now, copper alloys melt around 1000° C, and burning hydrogen yields temperatures around 2000° C. Hence, in the absence of any other evidence (such as spectroscopic measurements), I conclude these BLP experiments are just burning ordinary hydrogen. That is sad, because cold fusion and LENR already suffered from poor reputation.

But so I had long email exchanges on more interesting things, and that was nice. Going back to the possibility of deep electron orbitals being real, somehow, I initially entertained the rather vague idea that – who knows, right? – the mix of Zitterbewegung charges (positive and negative) – which, in my ‘mass-without-mass’ model of elementary particles, have zero rest mass – might, perhaps, combine in nuclear oscillations that have not been modeled so far. Indeed, when everything is said and done, I myself broke my teeth – so to speak – on trying to model the neutron itself – stable only inside of a nucleus – as a neutral ring current or nuclear ‘glue’ between protons. I did not succeed, but I still believe it should be possible. And if an analytical model could be found to model the motion of multiple pointlike zbw charges as a stable equilibrium that – as a whole – respects the Planck-Einstein relation, then we might, perhaps, also discover novel ways to unleash the binding energy between them, right?

So, these are some of the good things I want to – carefully and prudently – state about the field. I must now say why I am and remain skeptical. It is fair to say that everyone can easily see and verify how the energy of say, a photon in a laser beam, can dissipate away and, in the process, trigger very different reactions. Reactions that one would not associate with the energies of the incoming photons: all these reactions would qualify as some kind of anomalous heat, I would think. Think, for example, of using a high-powered laser to cut small tree branches, which is possible now. I have not studied the mechanics of this (too bad because I’ve been wanting to study the mechanics of lasers for many years now, but I never found the time to dig into Einstein’s or other theories on how it works – not approximately, but exactly), but I can easily see how the process of Compton scattering would explain why a substantial part of the energy of the photons would be absorbed by (1) outgoing photons with lower energy and (2) electrons with substantially higher kinetic energies. This kinetic energy would then redistribute all over the system (not only other electrons but even the massive nuclei at the center of each atomic and molecular system inside of these easy-to-burn materials, be they paper, carton, or wood). In short, we get heat: thermal energy. And quite a lot of it.

However, this process involves triggering lower-energy reactions: thermal or chemical reactions (fire actually is chemistry). [Also, you can easily see a lot of energy gets lost: using a 2000 W laser to cut branches that are only a few cm in diameter is not very energy-efficient, right? This is a point which I also talk about in my previous post on LENR: what is the energy balance? What is the total input energy and what is the nuclear fuel, respectively, and how do these two elements combine to make you think you’d get net energy out of the whole process?]

Regardless of the total energy equation (input – output), the first question is the more relevant one, because it goes to the core of the what and how of LENR. My blunt appraisal here is that of other skeptics: I cannot imagine how the energy in laser photons could – somehow – build up a sufficient reservoir of energy, to then reach a threshold and trigger an outright and proper nuclear or high-energy reaction.

If it is possible at all, it would have to be some kind of resonance process: a lower frequency feeding into a much higher-frequency phenomenon and gradually increasing its amplitude. How would it do that? That is simple. Harmonic oscillations have several natural frequencies, and the lower-energy oscillation can feed into one or more of these. See my post on music and math for an analytical explanation or – if you want something simpler – just think of a child on a swing, which – once in a while – you give an extra push in the back. You do not necessarily have to do that each and every time the swing comes back. No: you don’t need to push each and every time but, if you do push, you have to do at the right time. 🙂

Going back to LENR, we may think the frequency of a laser may feed into a nuclear oscillation, gradually increasing its amplitude, until the accumulated energy is sufficiently high and reaches some threshold triggering a proper nuclear or high-energy reaction. Frankly, I think this possibly could explain low-energy nuclear reactions. So, yes, it might be possible.

At the same time, I think it is rather unlikely. Why? At the smallest of scales, the Planck-Einstein relation holds, and so we have discrete energy states. These discrete energy states of protons, electrons, nuclei, atoms or molecules as a whole do not have any in-between states in which you can dump excess or surplus energy from somewhere outside. A photon-electron interaction triggers a reaction, and that’s not gradually but (almost) instantly. So, energy is being emitted as soon as it absorbed. Disequilibrium states do not last very long: atomic systems go back to equilibrium very quickly, and any excess energy is quickly emitted by photons or absorbed as internal heat, which is a (very) low-energy oscillation of the massive bits in whatever material you are using in these experiments (most experiments are on palladium, and the discussions on the effects impurities might have in the experiments are – frankly – a bit worrying). In any case, the point is that these disequilibrium states do surely not last long enough to entertain the kind of resonance processes that, say, made the Tacoma Bridge collapse. To make a long story short, I am and remain skeptical.

However, to my surprise, I was invited to join in a Zoom e-call, and listen to the rather interesting discussion on the future of both the French and International Society for Condensed Nuclear Matter (SFCMNS and ISCMNS, respectively – I will not put the links because they are both revamping their website now) after they had wrapped up their 25th International Conference.

What I saw and heard, made me quite happy: these were all honest and critical scientists looking at real-life experiments that do yield surprising results. Result that contradict my rather skeptical theoretical arguments (above) against LENR being possible. I also noted the Anthropocène Institute invests in them. I also note Nobuo Tanaka, former Executive Director of the International Energy Agency (not to be confused with the International Atomic Energy Agency!), spoke at ICCF-24, plus a lot of other very serious people. Also, it is quite obvious that nuclear energy is no longer out. On the contrary, it is in again and – as part of new investments in nuclear research – I think the LENR field should also be reconsidered, despite its chequered past. I also note LENR research in Japan is getting a lot more funding than research in the EU or the US, so perhaps they are seeing something that we do not see (it would be interesting to check what happens in the patents or IPR area on this). 🙂

So, all these considerations add up to more than enough – to me, at least – to continue giving these researchers the benefit of the doubt. We live in a fascinating world and, as the Wikipedia article on cold fusion notes, the discovery of the Mössbauer and other strange nuclear effects was also rather unexpected – in the sense that it had not been foreseen or predicted by some theorist. I do, therefore, not agree with the same Wikipedia article dismissing LENR as ‘pathological‘ or ‘cargo cult‘ science.

If anything, I think mainstream research sometimes also suffers from what critics say of the LENR field: “people are tricked into false results … by subjective effects, wishful thinking or threshold interactions.” But that is only a personal and non-relevant remark, as I am quitting my hobbyist study of physics now. It has lasted long enough (over a decade, really) and – as mentioned a few times already – I think I sort of get it now. As Feynman famously said in the Epilogue to his Lectures: “After all, it isn’t as horrible as it looks.”

I might add: I think the end of physics is near. All that’s left, is engineering. And quite a lot of it. 🙂