e-process concept from the Astronomy knowledge base

Astronomy View all facts Glossary Help

physical phenomena > process > physical process > nuclear process > nucleosynthetic reaction > e-process

Next nucleosynthetic reaction: p-process Up: nucleosynthetic reaction Previous nucleosynthetic reaction: alpha-process

e-process

subject fact

e-process has definition A hypothetical group of nuclear reactions by which the iron group is assumed to be synthesized. At temperatures > 5 × 10⁹ K and densities > 3 × 10⁶ g cm^-3 there are great numbers of collisions between high-energy photons and nuclei. These collisions break up the nuclei, the fragments of which promptly combine with other particles. Thus, there is in effect an equilibrium between formation and breakup. Since the iron group has the largest binding energies, the particles over the long run will tend to be trapped in these nuclei. The e-process (the e stands for equilibrium) is presumed to occur in a supernova explosion. has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:29:40.0
is a kind of nucleosynthetic reaction

physical process has domain physics 2001-09-27 09:29:38.0

e-process	has definition A hypothetical group of nuclear reactions by which the iron group is assumed to be synthesized. At temperatures > 5 × 10⁹ K and densities > 3 × 10⁶ g cm^-3 there are great numbers of collisions between high-energy photons and nuclei. These collisions break up the nuclei, the fragments of which promptly combine with other particles. Thus, there is in effect an equilibrium between formation and breakup. Since the iron group has the largest binding energies, the particles over the long run will tend to be trapped in these nuclei. The e-process (the e stands for equilibrium) is presumed to occur in a supernova explosion.
e-process	is a kind of nucleosynthetic reaction
physical process	has domain physics