Study of the 26Si(p,γ)27P reaction through Coulomb dissociation of 27P

The Coulomb dissociation of ²⁷P was studied experimentally using ²⁷P beams at 57MeV/nucleon with a lead target. The E2 gamma decay width of the first excited state in ²⁷P was determined to be (2.8±0.5)×10^-5eV. The total (M1 + E2) gamma decay width of the state, which is of astrophysical interest, is estimated by combining the experimental result and a shell model calculation. The reaction rate of ²⁶Si(p,γ)²⁷P is deduced from the estimated total gamma decay width. The astrophysical implication derived from estimated gamma decay width is discussed.