Question

Differentiate the processes in Stellar Nucleosynthesis, Explosive or Supernova Nucleosynthesis, and Cosmic Ray Spallation.

Answer 1

Answer:

Nucleosynthesis is the process that creates new atomic nuclei from pre-existing nucleons (protons and neutrons) and nuclei. According to current theories, the first nuclei were formed a few minutes after the Big Bang, through nuclear reactions in a process called Big Bang nucleosynthesis. After about 20 minutes, the universe had expanded and cooled to a point at which these high-energy collisions among nucleons ended, so only the fastest and simplest reactions occurred, leaving our universe containing about 75% hydrogen and 24% helium by mass. The rest is traces of other elements such as lithium and the hydrogen isotope deuterium. Nucleosynthesis in stars and their explosions later produced the variety of elements and isotopes that we have today, in a process called cosmic chemical evolution. The amounts of total mass in elements heavier than hydrogen and helium (called 'metals' by astrophysicists) remains small (few percent), so that the universe still has approximately the same composition.

Answer 2

These are cosmic activities that include processes like processes in Stellar Nucleosynthesis, Explosive or Supernova Nucleosynthesis, and Cosmic Ray Spallation.

Explanation:

Stellar Nucleosynthesis-

• It is the process in which elements are created within the stars by combining the protons and neutrons together.
• Fusion takes place inside the stars which transform hydrogen into helium, they generate heat and radiation.
• The simplest type of atoms in the universe is hydrogen.

Explosive-

• It is a reactive substance that contains a great amount of potential energy which produces an explosion if released suddenly.
• It is carried by the production of light, heat sound and pressure.

Supernova Nucleosynthesis -

• It takes place in an energetic environment of a supernova.
• It is a process that creates new atomic nuclei.

Cosmic Ray Spallation -

• It is an X process which is a set of naturally occuring nuclear reactions.
• It is the formation of chemical elements obtained from the impact of cosmic rays.
• It is a highly energetic charged particle from Earth that includes protons, alpha particles and nuclei.