Time delay between the nucleosynthesis of cosmic rays and their acceleration to relativistic energies

Details Time delay between the nucleosynthesis of cosmic rays and their acceleration to relativistic energies Time delay between the nucleosynthesis of cosmic rays and their acceleration to relativistic energies

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icrc....2..455s&link_type=abstract

Presented at 14th Intern. Cosmic Ray Conf., Munich, 15 Aug. 1975

Computer Science

2

Cosmic Rays, Nuclear Fusion, Relativistic Particles, Time Lag, Chemical Composition, Cobalt, Iron, Nickel, Particle Acceleration, Solar System

Scientific paper

The time delay sigma(t) between the nucleosynthesis of the elements observed in the cosmic rays and the onset of their acceleration is of critical importance for the discussion of the origin of the cosmic radiation and will affect its composition. The presence of iron group nuclei in the galaxy is believed to be mainly due to explosive nucleosynthesis. This process does not produce iron directly, but the proton rich progenitors Ni-56 and Ni-57. If these isotopes survive the ejection from the exploding star they decay to their stable isobar. If the cosmic rays are accelerated to relativistic energies quickly after their synthesis, these decay modes are prevented, leading to large differences in the Ni/Fe and Co/Fe ratio in the cosmic rays and the solar system abundances. From existing data on the nickel, cobalt and iron abundances in the cosmic rays it is concluded that more than a few weeks and most likely more than a year elapses between the synthesis of the cosmic ray nuclei and their acceleration.

Affiliated with

Also associated with

No associations

Rating

Time delay between the nucleosynthesis of cosmic rays and their acceleration to relativistic energies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Time delay between the nucleosynthesis of cosmic rays and their acceleration to relativistic energies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time delay between the nucleosynthesis of cosmic rays and their acceleration to relativistic energies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1539065