Neutron capture cross section of {sup 14}C of astrophysical interest studied by Coulomb breakup of {sup 15}C

Journal Article · Sun Mar 15 00:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.035805· OSTI ID:21199644

Nakamura, T ^[1]; Fukuda, N; Aoi, N; Kubo, T; Motobayashi, T; Otsu, H; Sakurai, H; Yoneda, K ^[2]; Imai, N; Watanabe, Y X ^[3]; Ishihara, M ^[2]; Iwasaki, H ^[4]; Kobayashi, T ^[5]; Mengoni, A ^[2]; Notani, M; Shimoura, S; Teranishi, T ^[6]

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1. Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Tokyo 152-8551 (Japan)
2. RIKEN Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
3. IPNS, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801 (Japan)
4. Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033 (Japan)
5. Department of Physics, Tohoku University, 2-1 Aoba, Aramaki, Aoba, Sendai 980-8578 (Japan)
6. Center for Nuclear Study, University of Tokyo (CNS) RIKEN Campus, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)

The neutron capture reaction on {sup 14}C leading to the {sup 15}C ground state, which plays an important role in various nucleosynthesis processes, has been studied using the Coulomb breakup of {sup 15}C on a Pb target at 68 MeV/nucleon. The breakup cross section has been converted into the energy-dependent neutron capture cross section using the principle of detailed balance. The energy spectrum shows typical p-wave neutron capture characteristics, which is explained by the fact that the ground state of {sup 15}C possesses a strong single-particle s-wave component and a moderate-sized neutron halo structure. The capture cross section for the {sup 14}C(n,{gamma}){sup 15}C reaction derived from the present experiment has been found to be consistent with the most recent data, directly measured using a {sup 14}C target. This result assures the validity of the Coulomb breakup method in deriving the neutron capture cross section for neutron-rich nuclei.

• OSTI ID: 21199644
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 79, Issue 3; Other Information: DOI: 10.1103/PhysRevC.79.035805; (c) 2009 The American Physical Society; 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
ASTROPHYSICS
CAPTURE
CARBON 14 TARGET
CARBON 15
CROSS SECTIONS
ENERGY DEPENDENCE
ENERGY SPECTRA
GAMMA DECAY
GROUND STATES
MEV RANGE 10-100
NEUTRON REACTIONS
NEUTRON-RICH ISOTOPES
NUCLEAR HALOS
NUCLEONS
NUCLEOSYNTHESIS
P WAVES
PARTICLES
S WAVES