Spectroscopic Study of Ca-39 for Endpoint Nucleosynthesis in Classical Novae

Liang, J.; Chen, A. A.; Anger, M.; Bishop, S.; Faestermann, T.; Fry, C.; Hertenberger, R.; Psaltis, A.; Seiler, D.; Tiwari, P.; Wirth, H-F und Wrede, C. (2020): Spectroscopic Study of Ca-39 for Endpoint Nucleosynthesis in Classical Novae. In: Nuclear Physics in Astrophysics Ix (Npa-Ix), Bd. 1668, 012025

Abstract

Classical novae are environments which can produce heavier elements up to mass A similar to 40. These nuclides at the endpoint of nova nucleosynthesis consist of elements such as Ar, K, and Ca. There is an order of magnitude discrepancy with the predicted and theoretical abundances of these endpoint nuclides produced in a classical nova. The uncertainty in the theoretical K-38(p, gamma)Ca-39 reaction rate has been shown to affect the abundances by an order of magnitude or more. The only direct measurement of this reaction rate was performed with the DRAGON facility at TRIUMF;however additional spectroscopic data could aid the interpretation of this data as well as motivate further study of this reaction rate. In this study, we present the preliminary results of a spectroscopic study of Ca-39 using the Ca-40(d,t)Ca-39 reaction carried out at the Maier-Leibnitz Laboratory in Garching, Germany.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 1742-6588
• Sprache: Englisch