Proton-Neutron Concentration Ratio in the Expanding Universe at the Stages preceding the Formation of the Elements
Mar 1, 195012 pages
Published in:
- Prog.Theor.Phys. 5 (1950) 2, 224-235
- Published: Mar 1, 1950
DOI:
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Abstract: (submitter)
In the theory of the origin of the elements by Gamow, Alpher, and colaborators1), primordial matter (ylem) of the universe, which afterwards has been
cooled down owing to the expansion of the universe and has formed the elements
through nuclear reactions such as radiative capture and beta-decays, is assumed
to consist solely of neutrons. At early stages, however, of high temperatures
(kT?:,mc, m being the electron m:lss) in the expanding universe before the
formation of the elements, induced beta-processes caused by energetic electrons,
positrons, neutrinos and antineutrinos, in addition to the natural decay of neutrons must have proceeded, their rates being faster at higher temperatures, and had a
effect on the proton-neutron concentration ratio.References(5)
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