4 papers · 1 filter
LiBeB, O and Fe Evolution: Refractory Element and Cosmic Ray Transport Delays
R. Ramaty, B. Kozlovsky, R. E. Lingenfelter
Employing a Monte-Carlo based evolutionary code, we show that the delay of Fe deposition relative to O, due to the incorporation of supernova ejecta refractories in high velocity g…
LiBeB Evolution: Three Models
R. Ramaty, R. E. Lingenfelter, B. Kozlovsky
We consider the three principal LiBeB evolutionary models, CRI in which the cosmic-ray source at all epochs of Galactic evolution is the average ISM, CRI+LECR in which metal enrich…
Spallogenic Light Elements and Cosmic-Ray Origin
R. Ramaty, R. E. Lingenfelter
Using a Monte Carlo code which incorporates the delayed mixing into the ISM of supernovae nucleosynthetic yields and ejecta kinetic energies (including events with very large energ…
LiBeB and the Origin of Cosmic Rays
Reuven Ramaty, Richard Lingenfelter, Benzion Kozlovsky
Be abundances at low metallicities have major implications on cosmic ray origin, requiring acceleration out of fresh supernova ejecta. The observed, essentially constant Be/Fe fixe…