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Even Pb-208 (and others Pb), after Bi, is fallen
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Angelo
Jul 30, 2012, 4:41:57 PM7/30/12
to
Hi all,
Pb 204
Atomic Percent Abundance: 1.4%
Spin: 0+
Half life: =>1.4E+17 years
Mode of decay: Alpha to Hg-200
Q-value from recommended values table: 1971.77 ± 1.35 keV
Pb 206
Atomic Percent Abundance: 24.1%
Spin:0+
Half life: => ? years
Mode of decay: Alpha to Hg-202
Q-value from recommended values table: 1136.56 ± 1.18 keV
Pb 207
Atomic Percent Abundance: 22.1%
Spin:1/2-
Half life: => ? years
Mode of decay: Alpha to Hg-203
Q-value from recommended values table: 391.47 ± 1.32 keV
Pb 208 (doubly magic!!)
Atomic percent abundance: 52.4%
Spin 0+
Half life: => ? years
Mode of decay: Alpha to Hg-204
Q-value from recommended values table: 518.80 ± 1.47 keV
I used these sites:
http://nucleardata.nuclear.lu.se/database/masses/
and
http://atom.kaeri.re.kr/ton/
From the first I found that the various isotopes of Pb,
believed to be stable to alpha decay, are even more apt
(energetically) to expell C-12 or C-14, with respect to
alpha-decay.
What do you think about?
Ciao, Angelo
Pb 204
Atomic Percent Abundance: 1.4%
Spin: 0+
Half life: =>1.4E+17 years
Mode of decay: Alpha to Hg-200
Q-value from recommended values table: 1971.77 ± 1.35 keV
Pb 206
Atomic Percent Abundance: 24.1%
Spin:0+
Half life: => ? years
Mode of decay: Alpha to Hg-202
Q-value from recommended values table: 1136.56 ± 1.18 keV
Pb 207
Atomic Percent Abundance: 22.1%
Spin:1/2-
Half life: => ? years
Mode of decay: Alpha to Hg-203
Q-value from recommended values table: 391.47 ± 1.32 keV
Pb 208 (doubly magic!!)
Atomic percent abundance: 52.4%
Spin 0+
Half life: => ? years
Mode of decay: Alpha to Hg-204
Q-value from recommended values table: 518.80 ± 1.47 keV
I used these sites:
http://nucleardata.nuclear.lu.se/database/masses/
and
http://atom.kaeri.re.kr/ton/
From the first I found that the various isotopes of Pb,
believed to be stable to alpha decay, are even more apt
(energetically) to expell C-12 or C-14, with respect to
alpha-decay.
What do you think about?
Ciao, Angelo
Angelo
Jul 30, 2012, 5:32:17 PM7/30/12
to
> From the first I found that the various isotopes of Pb,
> believed to be stable to alpha decay, are even more apt
> (energetically) to expell C-12 or C-14, with respect to
> alpha-decay.
> What do you think about?
BTW, could you help me to define the lacking half-life?
> believed to be stable to alpha decay, are even more apt
> (energetically) to expell C-12 or C-14, with respect to
> alpha-decay.
> What do you think about?
> Ciao, Angelo
Poutnik
Jul 31, 2012, 6:26:33 PM7/31/12
to
Angelo from patrizio...@libero.it
posted Mon, 30 Jul 2012 14:32:17 -0700 (PDT)
>
> On 30 Lug, 22:41, Angelo <patrizio.pan-2...@libero.it> wrote:
> > Hi all,
> >
> > Pb 204
> > Atomic Percent Abundance: 1.4%
> > Spin: 0+
> > Half life: =>1.4E+17 years
> > Mode of decay: Alpha to Hg-200
> >
> > Pb 206
> > Atomic Percent Abundance: 24.1%
> > Spin:0+
> > Half life: => ? years
> > Mode of decay: Alpha to Hg-202
> > Q-value from recommended values table: 1136.56 ? �1.18 keV
> > Pb 206
> > Atomic Percent Abundance: 24.1%
> > Spin:0+
> > Half life: => ? years
> > Mode of decay: Alpha to Hg-202
> > Pb 207
> > Atomic Percent Abundance: 22.1%
> > Spin:1/2-
> > Half life: => ? years
> > Mode of decay: Alpha to Hg-203
> > Q-value from recommended values table: 391.47 ? �1.32 keV
> > Atomic Percent Abundance: 22.1%
> > Spin:1/2-
> > Half life: => ? years
> > Mode of decay: Alpha to Hg-203
> >
> > Pb 208 (doubly magic!!)
> > Atomic percent abundance: 52.4%
> > Spin 0+
> > Half life: => ? years
> > Mode of decay: Alpha to Hg-204
> > Q-value from recommended values table: 518.80 ? �1.47 keV
> > Pb 208 (doubly magic!!)
> > Atomic percent abundance: 52.4%
> > Spin 0+
> > Half life: => ? years
> > Mode of decay: Alpha to Hg-204
> >
> > I used these sites:http://nucleardata.nuclear.lu.se/database/masses/
> > andhttp://atom.kaeri.re.kr/ton/
> > From the first I found that the various isotopes of Pb,
> > believed to be stable to alpha decay, are even more apt
> > (energetically) to expell C-12 or C-14, with respect to
> > alpha-decay.
> > What do you think about?
>
> BTW, could you help me to define the lacking half-life?
>
It can be either measured,
> > I used these sites:http://nucleardata.nuclear.lu.se/database/masses/
> > andhttp://atom.kaeri.re.kr/ton/
> > From the first I found that the various isotopes of Pb,
> > believed to be stable to alpha decay, are even more apt
> > (energetically) to expell C-12 or C-14, with respect to
> > alpha-decay.
> > What do you think about?
>
> BTW, could you help me to define the lacking half-life?
>
either predicted by nuclear QM calculations.
It cannot be defined.
It cannot be either calculated from energetical change.
All kernels behind 60Ni has lower and lower binding energy per nucleon.
What matter is energetic barrier
and probability of breaching the barrier.
--
Poutnik
Angelo
Aug 2, 2012, 1:46:53 PM8/2/12
to
On 1 Ago, 00:26, Poutnik <pout...@privacy.invalid> wrote:
> Angelo from patrizio.pan-2...@libero.it
> It cannot be either calculated from energetical change.
About this I something knew, thanks.
> All kernels behind 60Ni has lower and lower binding energy per nucleon.
Also for this.
> What matter is energetic barrier
> and probability of breaching the barrier.
OK, but some physicists insist to say that
I cannot speak of a barrier and the consequent
concept of going through that barrier.
> --
> Poutnik
Thanks, Angelo
> Angelo from patrizio.pan-2...@libero.it
> posted Mon, 30 Jul 2012 14:32:17 -0700 (PDT)
>
> > On 30 Lug, 22:41, Angelo <patrizio.pan-2...@libero.it> wrote:
> > > Hi all,
>
> > > Pb 204
> > > Atomic Percent Abundance: 1.4%
> > > Spin: 0+
> > > Half life: =>1.4E+17 years
> > > Mode of decay: Alpha to Hg-200
> > > Q-value from recommended values table: 1971.77 ? 1.35 keV
>
> > > Pb 206
> > > Atomic Percent Abundance: 24.1%
> > > Spin:0+
> > > Half life: => ? years
> > > Mode of decay: Alpha to Hg-202
> > > Q-value from recommended values table: 1136.56 ? 1.18 keV
>
> > On 30 Lug, 22:41, Angelo <patrizio.pan-2...@libero.it> wrote:
> > > Hi all,
>
> > > Pb 204
> > > Atomic Percent Abundance: 1.4%
> > > Spin: 0+
> > > Half life: =>1.4E+17 years
> > > Mode of decay: Alpha to Hg-200
> > > Q-value from recommended values table: 1971.77 ? 1.35 keV
>
> > > Pb 206
> > > Atomic Percent Abundance: 24.1%
> > > Spin:0+
> > > Half life: => ? years
> > > Mode of decay: Alpha to Hg-202
> > > Pb 207
> > > Atomic Percent Abundance: 22.1%
> > > Spin:1/2-
> > > Half life: => ? years
> > > Mode of decay: Alpha to Hg-203
> > > Q-value from recommended values table: 391.47 ? 1.32 keV
> > > Atomic Percent Abundance: 22.1%
> > > Spin:1/2-
> > > Half life: => ? years
> > > Mode of decay: Alpha to Hg-203
>
> > > Pb 208 (doubly magic!!)
> > > Atomic percent abundance: 52.4%
> > > Spin 0+
> > > Half life: => ? years
> > > Mode of decay: Alpha to Hg-204
> > > Q-value from recommended values table: 518.80 ? 1.47 keV
> > > Pb 208 (doubly magic!!)
> > > Atomic percent abundance: 52.4%
> > > Spin 0+
> > > Half life: => ? years
> > > Mode of decay: Alpha to Hg-204
>
> > > I used these sites:http://nucleardata.nuclear.lu.se/database/masses/
> > > andhttp://atom.kaeri.re.kr/ton/
> > > From the first I found that the various isotopes of Pb,
> > > believed to be stable to alpha decay, are even more apt
> > > (energetically) to expell C-12 or C-14, with respect to
> > > alpha-decay.
> > > What do you think about?
>
> > BTW, could you help me to define the lacking half-life?
>
> It can be either measured,
> either predicted by nuclear QM calculations.
>
> It cannot be defined.
OK, I trust you
> > > I used these sites:http://nucleardata.nuclear.lu.se/database/masses/
> > > andhttp://atom.kaeri.re.kr/ton/
> > > From the first I found that the various isotopes of Pb,
> > > believed to be stable to alpha decay, are even more apt
> > > (energetically) to expell C-12 or C-14, with respect to
> > > alpha-decay.
> > > What do you think about?
>
> > BTW, could you help me to define the lacking half-life?
>
> It can be either measured,
> either predicted by nuclear QM calculations.
>
> It cannot be defined.
> It cannot be either calculated from energetical change.
> All kernels behind 60Ni has lower and lower binding energy per nucleon.
> What matter is energetic barrier
> and probability of breaching the barrier.
I cannot speak of a barrier and the consequent
concept of going through that barrier.
> --
> Poutnik
Thanks, Angelo
Poutnik
Aug 2, 2012, 5:18:45 PM8/2/12
to
Angelo from patrizio...@libero.it
posted Thu, 2 Aug 2012 10:46:53 -0700 (PDT)
> > > BTW, could you help me to define the lacking half-life?
> >
> > It can be either measured,
> > either predicted by nuclear QM calculations.
> >
> > It cannot be defined.
>
> OK, I trust you
>
> > It cannot be either calculated from energetical change.
>
> About this I something knew, thanks.
>
> > All kernels behind 60Ni has lower and lower binding energy per nucleon.
>
> Also for this.
>
> > What matter is energetic barrier
> > and probability of breaching the barrier.
>
> OK, but some physicists insist to say that
> I cannot speak of a barrier and the consequent
> concept of going through that barrier.
>
> > --
> > Poutnik
>
> Thanks, Angelo
But evaluation would require deep knowledge of kernel QM.
--
Poutnik
Y.Porat
Aug 9, 2012, 11:58:17 AM8/9/12
to
see the schemes of Pb and Bi
in detail
including the ''map''
of the location of any of possible isotopes
indicated by numbering of neutrons by the figures that gives the isotop its name
pleasenote that that map shwes among the othres
the maximum possible attached neutrons
thatis the highest possible isotope
iow
all the possible locations for neutrons are filled up .
Gogle)
The Y Porat Model - an abstract
towards its end
TIA
Y.Porat
------------------------
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