Measurement of total reaction cross section for neutron-rich nucleus 11Li on28Si target at medium energy

The neutron-rich nucleus 11Li is separated by the radioactive ion beam line RIBLL at HIRFL from the breakup of 50MeV/u 13C on Be target. The total reaction cross sections for 11Li at energies range from 25 to 45MeV/u on Si target have been measured by using the transmission method. The experimental data at high and low energies can be fitted well by Glauber model using two Gauss density distribution. The matter radius of 11Li was also deduced.