In reply to Jones Beene's message of Mon, 29 Jul 2013 21:41:39 -0700:
Hi,
[snip]
All nuclear fusion reactions that produce heavier
elements than iron cause the star to lose energy and are said to be net
endothermic reactions whether or not hydrogen is involved.
Find 1 reference where it
In reply to Jones Beene's message of Mon, 29 Jul 2013 21:41:39 -0700:
Hi,
[snip]
While the height of the Coulomb barrier plays a role in the likelihood
that a
fusion reaction between e.g. Ni H will occur, such reactions are not
energetically forbidden, i.e. they are exothermic, not endothermic.
In reply to Jones Beene's message of Sun, 28 Jul 2013 07:25:39 -0700:
Hi,
[snip]
Proton capture is net endothermic
with nickel and leads to significant radioactivity.
1H+58Ni = 59Cu + 3.419 MeV
1H+60Ni = 61Cu + 4.801 MeV
1H+61Ni = 62Cu + 5.866 MeV
1H+61Ni = 58Co + 4He + 0.489 MeV
1H+62Ni =
In reply to Jones Beene's message of Sun, 28 Jul 2013 07:25:39 -0700:
Hi,
[snip]
BTW - It is seldom emphasized enough that proton fusion of all elements of
higher atomic mass than iron are net endothermic.
How do you calculate this?
Regards,
Robin van Spaandonk
Hi Robin,
None of those reactions are net exothermic.
You failed to include the energy necessary to overcome the Coulomb barrier,
which was the gist of the original message.
In all cases that high level of threshold energy, which must be expended, is
greater than the yield. Tunneling does not
On Mon, Jul 29, 2013 at 9:21 AM, Jones Beene jone...@pacbell.net wrote:
Fusion of elements with mass numbers (the number of protons and neutrons)
greater than 26 uses up more energy than is produced by the reaction. Thus,
elements heavier than iron cannot be fuel sources in stars.
In reply to Jones Beene's message of Mon, 29 Jul 2013 06:21:43 -0700:
Hi Jones,
Where they talk about endothermic reactions, they are talking about fusion of an
element with itself, not with Hydrogen.
This is because in stars, by the time the mid-level elements are formed, the
Hydrogen *in the
-Original Message-
From: mix...@bigpond.com
Where they talk about endothermic reactions, they are talking about fusion
of an
element with itself, not with Hydrogen.
Not true. Cosmologists are talking about ALL possible nuclear reactions.
There are many types of nucleosynthesis
-Original Message-
From: David ledin
Interesting paper
coupling processes of pseudo hydrogen atom (Rydberge state) inside a
supercavity.
http://lenr-canr.org/acrobat/AminiFthestudyof.pdf
What value do you find here, David? I could have missed something and, yes,
the sound of three
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