Measurements of Total Reaction Cross Sections for Neutron-deficient Nuclei (A<30) and Investigation on Possible Proton Halo Nuclei

摘要

Measurements of total reaction cross sections (σ_R) for some proton-rich nuclei (N = 10～15 isotones) on carbon target at intermediate energies have been performed on RIBLL of HIRFL. A larger enhancement of the σ_R for ~(27)P and ~(23)Al has been observed than for its neighboring nuclei. Density distributions for ~(27)P have been extracted from the measured σ_R data within the framework of the Glauber model. A proton halo in ~(27)P and ~(23)Al is demonstrated.