On Apr 12, 2011, at 8:59 AM, Mark Iverson wrote:
I don't think this was mentioned yet...
Apparently they have seen energetic particles of 100-300keV.
The following excerpt from one of the Ny Teknik Q&A sessions with
Rossi...
"Peter Ekström: In the fusion of a proton with Ni-58 a substantial
activity of Cu-59 is formed.
Cu-59 decays with a half-life of 82 seconds by beta+ decay. In the
Focardi and Rossi article it is
stated that: "No radioactivity has been found also in the Nickel
residual from the process".
Considering the very high activity of Cu-59 that is produced, it is
surprising that no activity is
detected. Even ten half-lives after the end of a run the activity
should be of the order of 1013 Bq,
which is not only easily measurable (with a detector far away from
the source) but also deadly for
everybody present in the room! (Could you explain?)
Rossi: No radioactivity has been found in the residual metals, it
is true, but the day after the
stop of the operation. In any case you are right, if 59-Cu is
formed from 58-Ni we should have the
couples of 511 keV at 180° and we never found them, while we found
keV in the range of 100-300 keV.
I think no 59Cu is produced, I suppose only stable Cu is produced
from the transmutation of the
isotopes 62Ni and 64Ni. I desume this from what we find after the
operations. Your observation is
correct."
-Mark
Hi Mark,
I feel certain that Rossi here is talking about gammas. The "couples
511 keV at 180°" are the positron-electron annihilation gammas.
It is of possible interest that Cu61 (half life 3.35 hours) can emit
a 283 keV gamma, but also normally emits a 656 keV gamma.
I suppose it is possible a very small percentage of Cu61 could have
be excited to a 283 keV isomeric state. There is so little to go on
as to what happens when a de-energized nucleus is created. The lack
of the normally seen 656 keV gamma might be explained by the high
degree of de-energization. There is a substantial energy deficit
associated with the reaction:
60Ni28 + p* --> 61Cu29 * + 4.801 MeV [-4.840 MeV]
It is also notable that Zn60 (half life 2,4 minutes) can emit gammas
in that range, associated with electron capture:
58Ni28 + 2 p* --> 60Zn30 * + 8.538 MeV [-11.541 MeV] --> 60Ni28 + 2
neutrinos + ~7 MeV
It is important to keep in mind that the energy deficits are
stochastic values, and could have trace occurrences out on the cusp.
The lack of positron emission is not at all surprising, at least not
within the perspective of deflation fusion. Positron emission should
be suppressed by a very short half life of electrons. It is a mystery
to me as to why gamma emission could be so delayed.
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
