Weak Transitions Effect from First Excited States in Core of Massive Star in Pre-supernova Phase

• Published in: Brazilian journal of physics Vol. 55; no. 1
• Main Authors: Rocha, S. C., Samana, A. R., Dimarco, A. J., Barbero, C. A., dos Santos, M., De Conti, C.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.02.2025; Springer Nature B.V
• Subjects: Astronomical models; Beta decay; Chemical elements; Chemical reactions; Decay rate; Electron capture; Excitation; Gravitational collapse; Massive stars; Nuclear capture; Nuclear reactions; Particle decay; Physics; Physics and Astronomy; Stellar evolution; Supernovae; Electron capture; Beta decay; Gross theory; Electron fraction; Pre-supernova stage

Massive stars in the pre-supernova stage are characterized by a compound core of chemical elements of the iron group, subject to nuclear reactions provided by the weak interaction. The rates at which these reactions occur, particularly the β -decay and the electron capture, influence the electron fr...