Measurement of products in N-17 breakup reaction

The breakup reaction of neutron-rich nucleus N-17 on Au-197 and Be-9 target s has been measured at RIBLL (Radioactive Ion Beam Line at Lanzhou). The pr oduct yields and the cross sections of charged particles in pair at forward angles were measured with the 14-unit detector array. The detection effici ency of the detector system was corrected by using Monte Carlo method. The breakup cross sections show that the ratio of the breakup cross section on Au-197 to Be-9 is 4-5. The cross sections of different breakup channels wer e also obtained. The results indicate that for a heavy target, except the c ontribution of nuclear dissociation, the Coulomb dissociation contribution has to be taken into account.