Proton branching ratios in 22Mg for X-ray bursts

• Published in: The European physical journal. A, Hadrons and nuclei Vol. 59; no. 5
• Main Authors: Kim, S. H., Chae, K. Y., Bardayan, D. W., Blackmon, J. C., Chipps, K. A., Hatarik, R., Jones, K. L., Kim, M. J., Kozub, R. L., Liang, J. F., Matei, C., Moazen, B. H., Nesaraja, C. D., O’Malley, P. D., Pain, S. D., Smith, M. S.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 23.05.2023; Springer Nature
• Subjects: Hadrons; Heavy Ions; Nuclear Fusion; Nuclear Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Regular Article - Experimental Physics
• ISSN: 1434-601X; 1434-601X
• DOI: 10.1140/epja/s10050-023-01029-0

Decay protons from 22 Mg energy levels populated through a previously reported 24 Mg(p, t) 22 Mg transfer reaction (Chae et al. in Phys Rev C 79:055804, 2009) have been analyzed for proton branching ratios as a follow-up analysis. The measurement was performed at the Holifield Radioactive Ion Beam Facility of Oak Ridge National Laboratory by utilizing 41-MeV proton beams and 24 Mg solid targets. Decay protons and reaction tritons were simultaneously detected with a silicon detector array. By investigating the 24 Mg(p, t) 22 Mg*(p) 21 Na channels, the proton branching ratios of five 22 Mg excited states were obtained. The measured branching ratios provide constraints on the proton partial widths of the populated 22 Mg levels, which have implications for X-ray burst nucleosynthesis.