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Hydrogen to Helium...Helium to heavier elements |
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| Jan31-05, 09:57 AM | #1 |
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Hydrogen to Helium...Helium to heavier elements
Would someone mind (in simple terms if possible) explaining how at the beginning of the universe Hydrogen combined to give Helium; then then how Helium combined with deuterium to create the heavier elements?
I would just like to be more versed on this process... Thanks for any help!!!! |
| Jan31-05, 11:43 AM | #2 |
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| Jan31-05, 12:00 PM | #3 |
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But I thought a Helium can't combine with another Helium atom because the result would be too unstable. If a Helium(2 protons/2neutrons) combines with a Helium you have 8 particles... but atoms with 5 or 8 particles are unstable.
That's why I wanted to know what role deuterium plays in this... How is deuterium created? How long does it last on it's own? What are the steps from Hydrogen to Helium to heavier elements? I appreciate your response russ_watters, I guess I would like some more detail with it though. Thanks for helping... |
| Jan31-05, 01:35 PM | #4 |
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Hydrogen to Helium...Helium to heavier elements
The sun produces energy primarily by the PP reaction and about 1-2% by the CNO cycle. The CNO cycle occurs in more massive stars -
http://csep10.phys.utk.edu/astr162/l...gy/cno-pp.html http://burro.astr.cwru.edu/Academics...s/ppchain.html http://csep10.phys.utk.edu/astr162/lect/energy/cno.html - for CNO discussion In addition to H and He, there are quantities of Li, Be and B, and they will be producing their emission spectra as well. See also - Reaction Rates for Stellar Nucleosynthesis and Helium Burning in Stars In the second link above, one will find
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