Where all matter comes from: a simple Periodic Table

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Dennis P Brown
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Where all matter comes from: a simple Periodic Table

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A very clear 'Periodic Table of the Elements' that shows how each element was created - some were created by more than one method. This is science at its best. See:

https://apod.nasa.gov/apod/ap230108.html

EDIT: Link updated to permanent and target photo attached. Frank Sanns
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Richard Hull
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Re: Where all matter comes from: a simple Periodic Table

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They did not give the key color (Gray-Green) for several elements. These are man made elements on earth today due to our refining elements like radium from rock. Many are simple decay chain elements of half lives so short lived that they effectively do not exist anywhere in the universe without intelligent intervention or nucleo-synthesis via concentrated neutron bombardment. (Mo98 + N) = Mo99 this decays to Tc99m which in 24 hours decays to a Tc99 with a 200,000 year half-life of Tc perhaps the longest lived of all of the Gray-Green elements.

Due to medical tests with technetium 99m, the Earth is now littered daily with long-lived radioactive Tc 99 from excreted urine. This will be around for over a million years.

See an interesting video of how to add Tc99 to your element collection.

https://www.youtube.com/watch?v=Mj0HDN82Pfo

Note: some colliding neutron stars can make two Technetium isotopes Tc97 and Tc98 with half lives of 1 and 2.6 million years! Again, this is a microscopic half-life in terms of seeing that star residue drifting over millions of years through space to wander into a forming solar nebulae. No technetium would be in the solidified crustal planetary bodies orbiting the new star later that were formed in the nebulae.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
Frank Sanns
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Re: Where all matter comes from: a simple Periodic Table

Post by Frank Sanns »

How does a dying low mass star make the most massive elements? Merging neutron stars sure but low mass stars? By what mechanism?
Achiever's madness; when enough is still not enough. ---FS
We have to stop looking at the world through our physical eyes. The universe is NOT what we see. It is the quantum world that is real. The rest is just an electron illusion. ---FS
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Dennis P Brown
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Re: Where all matter comes from: a simple Periodic Table

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These so-called low mass star are not low mass; certainly not the ones that produce those heaviest of elements. The stars that generate elements well above oxygen just by normal fusion 'burn' are truly massive (10 - 20 solar masses. However, by the standards of astrominers, these are considered low mass; the big boys are the blue giants: 80 - 200 sols!) The 'low mass' stars of 10 - 20 solar masses create many (but far from all) elements up to iron (but none higher, yet.) Then when that last readily available energy store is consumed, the outer shell of those hefty low mass stars collapse (that fictitious force gravity at work) and strikes the core at fantastic velocities. This causes a massive shock wave to develop as this outer blanket compresses and then rebounds at the core (darn neutron degeneracy at work.) Fusion flash over occurs with the remaining unburned semi-ash resulting in many neutrons and staggeringly large numbers of neutrinos being created. In that furious fusion flash over many of the heaviest elements are then created - these guys punch well above their weight, so to speak.

Remember, a star is 'rich' in metal if it has some lithium ... Astrominers are a strange group in that regard when using terms in a sense that any normal person would most certainly not follow.

This is all from memory but I'm sure there is a wiki one can read.
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Richard Hull
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Re: Where all matter comes from: a simple Periodic Table

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A small amount of Technetium 99 metal could be made via long term irradiation of Mo in an intense neutron flux. This would produce enough Tc99m which in a few days would become Tc99 which could be chemically extracted from the Mo. Even with a 220,000 year half life it would be vastly more radioactive than thorium metal and far less active than Radium metal per unit mass.

Irradiating common Mo to get Tc99 would be a rare instance of creating a short lived metastable isotope of a non-extant element on earth that decays to a normal isotope which has an incredibly long half-life.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
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