Coulomb dissociation of P27 at 500 MeV/u

Abstract : The proton-capture reaction Si26(p,γ)P27 was studied via Coulomb dissociation (CD) of P27 at an incident energy of about 500 MeV/u. The three lowest-lying resonances in P27 have been populated and their resonance strengths have been measured. In addition, a nonresonant direct-capture component was clearly identified and its astrophysical S factor measured. The experimental results are compared to Monte Carlo simulations of the CD process using a semiclassical model. Our thermonuclear reaction rates show good agreement with the rates from a recent compilation. With respect to the nuclear structure of P27 we have found evidence for a negative-parity intruder state at 2.88-MeV excitation energy.
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Submitted on : Thursday, June 23, 2016 - 3:13:49 PM
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J. Marganiec, S. Beceiro Novo, S. Typel, C. Langer, C. Wimmer, et al.. Coulomb dissociation of P27 at 500 MeV/u. Physical Review C, American Physical Society, 2016, 93 (4), pp.045811 ⟨10.1103/PhysRevC.93.045811⟩. ⟨in2p3-01336664⟩

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