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We have measured the β decay half-lives of 50Mn, 51Fe, 52,53Co, and 53,54Ni produced via the 58Ni projectile fragmentation. The uncertainty of 52Co half-life was reduced by a factor of 3 compared to the previous result. The half-lives were evaluated with the previous values and used as inputs of nucleosynthesis calculations of the rapid proton-capture process in an x-ray burst. [ABSTRACT FROM AUTHOR]

The history of experimental study on β -delayed proton decays in the rare-earth region was simply reviewed. The physical results of the β -delayed proton decays obtained at IMP, Lanzhou over the last 10 years were summarized, mainly including the first observation of 9 new β -delayed proton precursors along the odd-Z proton drip line and the new data for 2 waiting-point nuclei in the rp-process. The results were compared and discussed with different nuclear model calculations. Finally, the perspective in near future was briefly introduced. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

A method, neutron transfer reaction and charge symmetry of mirror nuclei, is used to study (p,γ) reaction on proton-rich nuclei in this paper. The asymptotic normalization coefficients (ANCs) of virtual decays 9Li → 8Li + n and 27Mg → 26Mg + n were extracted from the angular distributions of the 8Li(d, p)9Li and 26Mg(d, p)27Mg reactions, through distorted wave Born approximation (DWBA) analysis. The astrophysical S-factors and reaction rates of 8B(p, γ)9C and 26Si(p, γ)27P were then determined based on charge symmetry. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]