TY - JOUR
T1 - Investigation of excited states in Mg22 via resonant elastic scattering of Na21+p and its astrophysical implications
AU - He, J. J.
AU - Kubono, S.
AU - Teranishi, T.
AU - Hu, J.
AU - Notani, M.
AU - Baba, H.
AU - Nishimura, S.
AU - Moon, J. Y.
AU - Nishimura, M.
AU - Iwasaki, H.
AU - Yanagisawa, Y.
AU - Hokoiwa, N.
AU - Kibe, M.
AU - Lee, J. H.
AU - Kato, S.
AU - Gono, Y.
AU - Lee, C. S.
PY - 2009/8/6
Y1 - 2009/8/6
N2 - The excited states in Mg22 have been investigated by the resonant elastic scattering of Na21+p. A 4.0 MeV/nucleon Na21 beam was separated by the Center for Nuclear Study (CNS) radioactive ion beam separator (CRIB) and then used to bombard a thick (CH2)n target. The energy spectra of recoiled protons were measured at scattering angles of θc.m. 172,146, and 134, respectively. A wide energy-range of excitation function in Mg22 (up to Ex~8.9 MeV) was obtained simultaneously with a thick-target method, and a state at 7.06 MeV was newly observed. The resonant parameters were deduced from an R-matrix analysis of the center-of-mass (c.m.) differential cross-section data with a SAMMY-M6-BETA code. The astrophysical resonant reaction rate for the Ne18(α,p)Na21 reaction was recalculated based on the present parameters. Generally speaking, the present rates are much smaller than the previous ones.
AB - The excited states in Mg22 have been investigated by the resonant elastic scattering of Na21+p. A 4.0 MeV/nucleon Na21 beam was separated by the Center for Nuclear Study (CNS) radioactive ion beam separator (CRIB) and then used to bombard a thick (CH2)n target. The energy spectra of recoiled protons were measured at scattering angles of θc.m. 172,146, and 134, respectively. A wide energy-range of excitation function in Mg22 (up to Ex~8.9 MeV) was obtained simultaneously with a thick-target method, and a state at 7.06 MeV was newly observed. The resonant parameters were deduced from an R-matrix analysis of the center-of-mass (c.m.) differential cross-section data with a SAMMY-M6-BETA code. The astrophysical resonant reaction rate for the Ne18(α,p)Na21 reaction was recalculated based on the present parameters. Generally speaking, the present rates are much smaller than the previous ones.
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U2 - 10.1103/PhysRevC.80.015801
DO - 10.1103/PhysRevC.80.015801
M3 - Article
AN - SCOPUS:68549119001
SN - 0556-2813
VL - 80
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 1
M1 - 015801
ER -