Was the hydrogen formed from big bang nucleosynthesis a result of thermonuclear fusion or quantum tunneling ?

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  • 2 months ago

    Neither.  They precipitated out of the very very early universe, which consisted of pure energy.  Remember e=mc^2 - that's the relationship between matter and energy.  They're two sides of the same thing, kind of like liquid water and steam.  If you convert matter to energy, the resulting energy is enormous, which is why nuclear weapons are the way they are.

    So as the universe cooled from 100 trillion trillion degrees to, say, "only" a billion, much of the energy condensed to matter, most of it consisting of the simplest element, hydrogen.  (No elements can fuse to make hydrogen, since it's the simplest atom.)

  • 2 months ago

    Hydrogen atoms have one proton. They are not made by fusion. All other atoms are made by fusion. 

  • ?
    Lv 7
    2 months ago

    Deuterium (heavy hydrogen) was created during the nucleosynthesis period, as well as helium and a small amount of lithium. It is likely - just as occurs during fusion in stars - that at some point quantum tunneling was involved.

    In stars, there generally isn’t enough kinetic energy to overcome the Coulomb potential allowing protons to fuse into deuterium. However, quantum tunneling allows protons to ‘burrow’ through the Coulomb ‘barrier’ allowing fusion to occur. So it is likely at some point during the nucleosynthesis  period that quantum tunneling was involved in the fusion process.

    ***update - arghh, I don’t know why some idiot down voted this, presumably out of ignorance. Deuterium is an isotope of hydrogen formed by FUSION of two protons aided by quantum tunneling. One of the protons beta decays to a neutron. The resulting nucleus is an isotope of hydrogen with one proton and one neutron. So, yes, deuterium was formed during nucleosynthesis after the Big Bang. In fact, that is when almost all of it was produced.

  • John
    Lv 6
    2 months ago

    You are making an assumption that the big bang happened. Impossible for various reasons. Anyone who doesn't believe in the big bang is a crackpot. Alan Guth. Where did super massive black holes come from? And now ultra massive black holes have been found, assuming that the Universe is 13.6 billion years old. M-Theory gives an answer.

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  • 2 months ago

    Hydrogen must have been the first substance to be formed

    And there would have been no Thermonuclear Fusion Action involved

    As what has been said

    Hydrogen, Helium and Deuteriium made the first stars and whatever came after that

    To rewind back to the Big Bang itself is impossible because nobody has any real idea what caused it or how long ago it actually was

     Check out  HD 140283 and is there any chance of even older stars ??

    Making a mockery of the proposed age of the Universe

    It shows how little we actually know

    I believe in a Big Bounce

    Either that or it was a Quark of Nature !!

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    Source(s): EXACTLY
  • 2 months ago

    Hydrogen atoms have just one proton. You can't fusion anything to get hydrogen. Fusion involves bringing TWO things together.

    Protons were created when quarks aggregated, at about T0 + 1 millisecond. In particular, two up quarks and one down quark combine to make one proton.

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