Re: [Vo]:I think this was the best ICCF conference in a while
https://www.degruyter.com/view/j/nanoph.2015.4.issue-1/nanoph-2014-0003/nanoph-2014-0003.xml Low-loss, infrared and terahertz nanophotonics using surface phonon polaritons Polaritons can be pumped using terahertz pumping. On Tue, Jun 12, 2018 at 9:18 AM, Bob Higgins wrote: > But, I think you missed the point (maybe). Achieving an XH stimulation > with such weak lasers, and in particularly at a required resonance in > difference frequency in the THz range, is a key probe of the effect. Yes, > you might be able to generate some enhancement by brute force, but it would > cloud the probe of the nature of the effect. The efficiency will be low > for conversion of the small power laser signal pair to a THz difference > signal, so it means that the THz signal at the surface was extremely weak. > Yet at the THz resonance, it had a very significant effect on the XH. The > THz signal was extremely weak compared to the XH that was stimulated and > was clearly non-ionizing. That THz-to-XH gain at such a low level is a key > evidence of phonon involvement IMHO. > > On Mon, Jun 11, 2018 at 9:17 PM, Jones Beene wrote: > >> Bob, >> >> >> >> One interpretation of the input parameters and the use of very weak >> lasers by L/C (comparatively) is that for them to see any anomalous thermal >> effect, they had to hit a special resonance frequency in order to get >> results. >> >> >> >> OTOH if a far more powerful laser is available and is employed – then a >> brute force approach negates the need to achieve an exact resonance. >> >> >> >> Thus a “special THz range” could be red herring... >> >> >> >> >> >> *From: *Bob Higgins >> >> >> >> Jones, >> >> >> >> I don't think the Letts-Cravens experiment is similar to Holmlid at all. >> They used two calibrated wavelength lasers superimposed on the cathode. >> They found that when the lasers were separated by a specific frequency >> difference in the 10-20 THz range, there was a peaking in the XP. For >> there to be a frequency difference effect, there must be a nonlinearity - >> likely a surface plasmon at the cathode surface - that allows the >> difference frequency to form. The difference frequency of 10-20 THz where >> there was a peak in XP is VERY suggestive of phonon stimulation, something >> compeletely different than Holmlid's experiment. >> >> >> >> *From: *Jed Rothwell >> >> I do not think there is any evidence for muons in cold fusion. >> >> JB: There is actually plenty of evidence along with plenty of data some >> of which was presented. You may not think the evidence is credible, but you >> are not a nuclear engineer >> >> >> >>- People who are nuclear engineers and nuclear physicists don't think >>so either. >> >> >> >> Some do, some don’t. George Miley for instance, who has far stronger >> credentials than most critics of Holmlid, was actually a co-author with him. >> >> >> >> >> >>- The main reason I know of is that if there were lots of muons, they >>would cause harm, and there is no sign of harm. >> >> >> >> There is not much sign of harm for airline crews who spend many hours at >> altitude where muons are present in high flux. Furthermore, Holmlid has >> suffered a health issue recently which could have been aggravated by >> exposure to muons. The jury is out on this issue. >> >> >> >> In fact, muons are weakly interacting with light elements like carbon so >> health issues are not expected but no one knows. The Curie’s health >> problems, for instance, is a situation where they were exposed to muons, in >> addition to gamma radiation, but no one has revisited the old cases to >> estimate relative risks. >> >> >> >> Actually, there are stronger arguments against muons than health issues >> but what is needed is a stronger independent replication. >> >> >> >> Since the so-called “Letts-Cravens effect” is similar to Holmlid’s >> technique and has been replicated by others, it is conceivable that some >> kind of hybrid experiment will emerge… sooner rather than later, it is >> hoped. >> >> >> >> >> >> >> >> >> > >
[Vo]:ICCF-21 slides and preprint uploaded
Higgins, R. and D. Letts. Modeling & Simulation of a Gas Discharge LENR Prototype (PowerPoint slides). in The 21st International Conference for Condensed Matter Nuclear Science ICCF-21. 2018. Fort Collins, CO. http://lenr-canr.org/acrobat/HigginsRmodelingsi.pdf Higgins, R. and D. Letts. Modeling & Simulation of a Gas Discharge LENR Prototype (Preprint). in The 21st International Conference for Condensed Matter Nuclear Science ICCF-21. 2018. Fort Collins, CO. http://lenr-canr.org/acrobat/HigginsRmodelingsia.pdf Storms, E. The enthalpy of formation of PdH as a function of H/Pd atom ratio and treatment (PowerPoint slides). in The 21st International Conference for Condensed Matter Nuclear Science ICCF-21. 2018. Fort Collins, CO. http://lenr-canr.org/acrobat/StormsEtheenthalp.pdf
RE: [Vo]:I think this was the best ICCF conference in a while
Interesting… This cited work with photonic crystals would be even more relevant if palladium hydride is a photonic crystal. Is it? It could be … but I cannot find a direct reference for that. Yet palladium as an element is photoactive, and it turns up often in a search of photonic crystals but not as hydride. Here is the type of article that turns up but it is not on point. https://aip.scitation.org/doi/10.1063/1.3690085 Still – the photonic crystal as a feature of the Letts/Cravens effect, has explanatory appeal and would be important with a bit more evidence – plus -- the Holmlid effect is using a different substrate – basically hematite modified as a styrene (spillover) catalyst. Hematite itself does have photonic properties and, as it turns out, hematite works as a spillover catalyst when it is thermally activated with potassium. Potassium is photoactive, particularly as an ionic crystal. Thus, a few of the details fit into place as an emerging MO … a common denominator between the two experiments. It may be a stretch, but there seems to be a valid case for the proposition that the Letts/Cravens effect is related to photon coherence, via the beat wave of two lasers which are being tuned to the resonance of a photonic crystal which is a hydride in which the resonance level is in the THz range. As of now, there is no available coherent photon source for THz - but these lasers are on the way as they have military significance. The resonance for iron ferrite may correspondingly be in the visible range (yellow-green) OR the brute force effect of a more powerful light source overwhelms the need for an exact resonance. There is no need to invoke Hawking radiation. We simply have one coherent light source (a laser) stimulating photonic crystal in a high Q mutual feedback arrangement. Conservation of miracles, you know Of course, for this possibility to get any traction - it is imperative that a muon detector be used in a Letts/Cravens experiment … From: Axil Axil An experiment similar to Letts-Cravens. http://iopscience.iop.org/article/10.1088/0957-4484/26/23/234002 Experimental observation of anomalous thermal radiation from a three-dimensional metallic photonic crystal Abstract We report some striking results on thermal radiation properties of a resonantly coupled cavity photonic crystal (PhC) at elevated temperatures (T = 400–900 K). We experimentally found that at resonant wavelengths, λ = 1.1, 1.64, 2.85 μm, the PhC emission is spectrally selective, quasi-coherent, directional, and shows significant deviation from Planck's blackbody law at equilibrium. The presence of non-equilibrium effects, driven by strong thermal excitation and cavity resonance, may be the major cause for our experimental observation. Sooner or later, science would stumble over some sort of LENR reaction. thermal radiation coming off this photonic crystal (PhC) is up to 50 times stronger than blackbody radiation at certain frequencies. That radiation is coherent, directional, and focused. This finding has the researchers puzzled. I speculated that the coupled cavities in this crystal form a polariton Bose condensate that emits hawking radiation at specific thermal frequencies. There also may be some overunity here: more energy out than in... Near infrared is resonant with the size of the optical cavity. Bob Higgins wrote: Jones, I don't think the Letts-Cravens experiment is similar to Holmlid at all. They used two calibrated wavelength lasers superimposed on the cathode. They found that when the lasers were separated by a specific frequency difference in the 10-20 THz range, there was a peaking in the XP. For there to be a frequency difference effect, there must be a nonlinearity - likely a surface plasmon at the cathode surface - that allows the difference frequency to form. The difference frequency of 10-20 THz where there was a peak in XP is VERY suggestive of phonon stimulation, something compeletely different than Holmlid's experiment.
[Vo]:I think this was the best ICCF conference in a while
But, I think you missed the point (maybe). Achieving an XH stimulation with such weak lasers, and in particularly at a required resonance in difference frequency in the THz range, is a key probe of the effect. Yes, you might be able to generate some enhancement by brute force, but it would cloud the probe of the nature of the effect. The efficiency will be low for conversion of the small power laser signal pair to a THz difference signal, so it means that the THz signal at the surface was extremely weak. Yet at the THz resonance, it had a very significant effect on the XH. The THz signal was extremely weak compared to the XH that was stimulated and was clearly non-ionizing. That THz-to-XH gain at such a low level is a key evidence of phonon involvement IMHO. On Mon, Jun 11, 2018 at 9:17 PM, Jones Beene wrote: > Bob, > > > > One interpretation of the input parameters and the use of very weak lasers > by L/C (comparatively) is that for them to see any anomalous thermal > effect, they had to hit a special resonance frequency in order to get > results. > > > > OTOH if a far more powerful laser is available and is employed – then a > brute force approach negates the need to achieve an exact resonance. > > > > Thus a “special THz range” could be red herring... > > > > > > *From: *Bob Higgins > > > > Jones, > > > > I don't think the Letts-Cravens experiment is similar to Holmlid at all. > They used two calibrated wavelength lasers superimposed on the cathode. > They found that when the lasers were separated by a specific frequency > difference in the 10-20 THz range, there was a peaking in the XP. For > there to be a frequency difference effect, there must be a nonlinearity - > likely a surface plasmon at the cathode surface - that allows the > difference frequency to form. The difference frequency of 10-20 THz where > there was a peak in XP is VERY suggestive of phonon stimulation, something > compeletely different than Holmlid's experiment. > > > > *From: *Jed Rothwell > > I do not think there is any evidence for muons in cold fusion. > > JB: There is actually plenty of evidence along with plenty of data some of > which was presented. You may not think the evidence is credible, but you > are not a nuclear engineer > > > >- People who are nuclear engineers and nuclear physicists don't think >so either. > > > > Some do, some don’t. George Miley for instance, who has far stronger > credentials than most critics of Holmlid, was actually a co-author with him. > > > > > >- The main reason I know of is that if there were lots of muons, they >would cause harm, and there is no sign of harm. > > > > There is not much sign of harm for airline crews who spend many hours at > altitude where muons are present in high flux. Furthermore, Holmlid has > suffered a health issue recently which could have been aggravated by > exposure to muons. The jury is out on this issue. > > > > In fact, muons are weakly interacting with light elements like carbon so > health issues are not expected but no one knows. The Curie’s health > problems, for instance, is a situation where they were exposed to muons, in > addition to gamma radiation, but no one has revisited the old cases to > estimate relative risks. > > > > Actually, there are stronger arguments against muons than health issues > but what is needed is a stronger independent replication. > > > > Since the so-called “Letts-Cravens effect” is similar to Holmlid’s > technique and has been replicated by others, it is conceivable that some > kind of hybrid experiment will emerge… sooner rather than later, it is > hoped. > > > > > > > > >
