I se you was quicker with neutron capture.
But the should look for
He4 in the Ni metall.
On Thu, 27 Mar 2014 20:06:03 -0700, Eric Walker
wrote:
On Thu, Mar 27, 2014 at 8:55 AM, H Veeder wrote:
Going from
D to H should be endothermic.
Exciting slides. I do not have the
wherewithal to assess their calorimetry, so I will assume it is
accurate.
Here are some exothermic reactions involving generation of H
from D:
* d + 60Ni → 61Ni + p + Q (6.1 MeV)
* d + 61Ni → 62Ni + p
+ Q (8.9 MeV)
* d + 62Ni → 63Ni + p + Q (5.1 MeV)
* d + 64Ni → 65Ni
+ p + Q (7.9 MeV)
Note that in the authors' back-of-the-envelope
calculations using two d+d branches, yielding 4.03 MeV and 3.27 MeV
respectively, they came to an expected energy output that was lower than
the one they think they observed. So the higher Qs of the above
reactions fit that picture nicely. Their slides on the neutron capture
cross sections of nickel suggest that they are also looking at thinking
about the d+Ni reactions. Regarding the radiation measurements they have
not yet reported on -- I will call out a guess that they will report
evidence of beta+ and beta- decay.
The treated nickel is interesting
looking. I assume this is what the nickel looks like prior to a
reaction. Note that there is greater occasion for electrically insulated
grains after the treatment than before the treatment.
Note that the
NiD system is quite different than the oft-studied PdD system. I vaguely
recall sometime back that proton and deuteron capture are not favorable
in palladium, whereas proton capture is favorable in nickel. What is
interesting in the above scenario is that we are looking at the
possibility not of proton capture but of neutron capture.
Eric
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