Study of 19F Levels with Ex = 6.7 - 7.7 MeV by the 15N+α Scattering Experiment

• Published in: Journal of the Korean Physical Society 2018, 73(3), , pp.265-270
• Main Authors: Kim, D., Kim, G. W., Park, S. Y., Kim, A., Hahn, K. I., Abe, K., Beliuskina, O., Hayakawa, S., Imai, N., Kitamura, N., Sakaguchi, Y., Yamaguchi, H., Cha, S. M., Chae, K. Y., Kwag, M. S., Hong, S. W., Lee, E. J., Lee, J. H., Lee, E. K., Moon, J. Y., Bae, S. H., Choi, S. H., Kubono, S., Panin, V., Wakabayashi, Y., Iwasa, N., Kahl, D., Chen, A. A.
• Format: Article
• Language: English
• Subjects: Mathematical and Computational Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Theoretical; 물리학
• ISSN: 0374-4884; 1976-8524
• DOI: 10.3938/jkps.73.265

The intense γ -rays from classical novae are emitted due to the β -decay of 18 F which is produced by the Hot-CNO cycle. The reaction rate of 18 F( p , α ) 15 O affects the prediction of the abundance of 18 F. The main contribution to this reaction rate is from the resonances in 19 Ne near and above the proton threshold. Hence, many experiments and theoretical works have been performed on the low-lying 18 F+ p resonances. One of the methods for investigating 19 Ne parameters is studying the mirror nucleus 19 F. α elastic scattering experiment was performed with a 7 MeV/u 15 N beam for investigating the resonance parameters in 19 F using the thick target method in inverse kinematics at the radioactive beam facility CRIB of the Center for Nuclear Study, the University of Tokyo. The excitation function of 19 F was obtained for the excitation energy E x = 6.7 - 7.7 MeV, and the parameters of the resonance states in 19 F were determined using an R-matrix analysis.