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.