The abundance of N-14 at the cosmic-ray source - A study using new fragmentation cross sections

Citations Over TimeTop 14% of 1989 papers

Abstract

The abundance of N-14 at the Galactic cosmic ray source was examined using new fragmentation cross sections measured by the University of New Hampshire group for 12 different source nuclei (ranging from C-12 to Ni-58) which cover about 70 percent of all cosmic-ray nuclei arriving at earth. A new cross-section program was used to estimate unmeasured cross sections. These cross sections were then incorporated into a Galactic propagation program to calculate the interstellar production of B and N. Results indicate that atomic selection effects alone cannot explain adequately the observed depletion of N-14 relative to O-16 in the cosmic-ray source with respect to the solar corona, indicating that some part of this depletion must have a nuclear/nucleosynthetic origin.

Related Papers

• → A Gaia-Enceladus Analog in the EAGLE Simulation: Insights into the Early Evolution of the Milky Way(2019)58 cited
• → The Role of Mass and Environment on Satellite Distributions around Milky Way Analogs in the Romulus25 Simulation(2023)6 cited
• → The Role of Mass and Environment on Satellite distributions around Milky Way analogs in the Romulus25 simulation(2023)1 cited
• → High-Velocity Clouds Merging with the Milky Way(2008)