Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2004-02-04
Physics
Nuclear Physics
Nuclear Experiment
16 pages, 5 figures, to be published in Phys.Rev.C
Scientific paper
10.1103/PhysRevC.69.034326
The reaction cross sections of $^{27,28}$P and the corresponding isotones on Si target were measured at intermediate energies. The measured reaction cross sections of the N=12 and 13 isotones show an abrupt increase at $% Z=15$. The experimental results for the isotones with $Z\leq 14$ as well as $% ^{28}$P can be well described by the modified Glauber theory of the optical limit approach. The enhancement of the reaction cross section for $^{28}$P could be explained in the modified Glauber theory with an enlarged core. Theoretical analysis with the modified Glauber theory of the optical limit and few-body approaches underpredicted the experimental data of $^{27}$P. Our theoretical analysis shows that an enlarged core together with proton halo are probably the mechanism responsible for the enhancement of the cross sections for the reaction of $^{27}$P+$^{28}$Si.
Chen Bao-Qiu
Chen Zhi-Jian
Guo Zhou-Yi
Li Jian-Xin
Lin Cheng-Jian
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