Well, one wonders if some of the "triple tracks" have not been misidentified, given the known miniscule cross-section of C-12 for thermal neutrons and lack of fast neutrons in LENR. There are simply too many triple tracks for even a year of exposure…
WERE IT NOT FOR THE INTERPRETATION. Is it valid logically? If you look carefully at the images the bubbles are NOT compatible with three identical ions (in mass/energy) and they should be if there were really three alphas. Instead, usually there is one larger bubble (the center one that is often larger and the other two, which are themselves not identical. This old paper indicates why boron was initially added to CR39. http://www.tandfonline.com/doi/abs/10.1080/18811248.1984.9731126#preview ... and it is simply to narrow down the interpretation of the source, as boron does not respond to gammas. Problem is: Boron is not always added to CR39, and if it is not labeled as being added, then the suspicion can be that B is absent. This would be a reason to eliminate it - as well as the false assumption that boron does not produce triple tracks. First - Is it valid to assume no boron, if the film is not labeled as such? If not, or if the film is known to have boron, then the triple tracks could be a relic of boron interaction. It does not take much boron as a contaminate, given the extremely high cross-section (millions of times higher than for C12) That probability - of the assumption of no boron based on labeling alone - may be similar to why food processors must disclose whether the same equipment was used with peanuts and other allergens. Can you trust a supplier of film for that kind of full disclosure? If not, then it throws a wild-card into the interpretation. Speaking of "it's all about interpretation": - This reaction below is actually a triple track, although on first blush - it would be categorized as double. 10B + n → [11B] → α + 7Li Not only is it triple track, because the 11 boron actually is dislocated far enough on impact with the neutron to cause the central bubble - but also, the two which split off from the 11B (in this interpretation of triple tracks) are the right size range for them to be consistent with the images … the ones which claim the triplets are from C12 disintegration. This is an alternate interpretation. It indicates only that there are other logical interpretations of triple tracks - which may or may not be more cogent than C12, when the cross-section is factored in. -----Original Message----- From: Abd ul-Rahman Lomax AFAIK fast neutrons are detected by the fact that they occasionally break a C12 nucleus into 3 alpha particles. It is the three alpha particles that produce three cone shaped tracks in the CR39, with a common origin. Common origin yes - but NOT a similarity in mass energy, since the bubbles vary considerably
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