Resonance states in {sup 27}P using Coulomb dissociation and their effect on the stellar reaction {sup 26}Si(p,{gamma}) {sup 27}P

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.035808· OSTI ID:21596795

Togano, Y; Gomi, T; Baba, H; Higurashi, Y; Kanno, S; Takeshita, E ^[1]; Motobayashi, T; Aoi, N; Fukuda, N; Imai, N; Ishihara, M; Kubo, T; Minemura, T; Sakurai, H; Takeuchi, S; Yamada, K; Yanagisawa, Y; Yoneda, K; Yoshida, A ^[2]; Ando, Y ^[1]

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1. Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501 (Japan)
2. RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)

The stellar reaction {sup 26}Si(p, {gamma}){sup 27}P was studied in the Coulomb dissociation of {sup 27}P. Two known resonance levels in {sup 27}P were excited and a candidate for the third excited state was found in the {sup 26}Si p relative energy spectrum. The E2 resonance strengths {omega}{gamma} were obtained to be (6.5{+-}1.3)x10{sup -11}, (6.0{+-}1.1)x10{sup -10}, and (1.10{+-}0.27)x10{sup -10} MeV. The total (E2+M1) {omega}{gamma} value for the first excited state was evaluated to be 1.9{sub -1.1}{sup +1.9}x10{sup -9} MeV with the help of the shell model. The error was estimated from the deviation of theoretical predictions with the same shell model from experimental strengths obtained in the present study for {sup 27}P and earlier ones for the mirror nucleus {sup 27}Mg. The astrophysical reaction rate for the {sup 26}Si(p, {gamma}){sup 27}P reaction was also calculated and compared with previous estimations.

• OSTI ID: 21596795
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 84, Issue 3; Other Information: DOI: 10.1103/PhysRevC.84.035808; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DISSOCIATION
E2-TRANSITIONS
ENERGY SPECTRA
EXCITED STATES
GAMMA DECAY
M1-TRANSITIONS
MAGNESIUM 27
MIRROR NUCLEI
PHOSPHORUS 27
PROTON REACTIONS
REACTION KINETICS
RESONANCE
SHELL MODELS
SILICON 26
ALKALINE EARTH ISOTOPES
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
DECAY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HADRON REACTIONS
ISOTOPES
KINETICS
LIGHT NUCLEI
MAGNESIUM ISOTOPES
MATHEMATICAL MODELS
MILLISECONDS LIVING RADIOISOTOPES
MINUTES LIVING RADIOISOTOPES
MULTIPOLE TRANSITIONS
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
PHOSPHORUS ISOTOPES
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SILICON ISOTOPES
SPECTRA