Abstract

Measurements of total reaction cross sections (σR) 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 σR for 27P and 23Al has been observed than for its neighboring nuclei. Density distributions for 27P have been extracted from the measured σR data within the framework of the Glauber model. A proton halo in 27P and 23Al is demonstrated.

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