摘要
The results of comprehensive microscopic optical model calculations are pres-ented for the K<sup>+</sup> scattering from <sup>6</sup>Li,<sup>12</sup>C,<sup>28</sup>Si and <sup>40</sup>Ca at incident momenta 400-800MeV/c.The unconventional medium effect （i.e.the density-dependent correction forthe K<sup>+</sup>-nucleon scattering amplitude） is considered in two approaches.Both results arein agreement with recent experimental data.The influence of the correction on K<sup>+</sup> scat-tering from different nuclei are discussed in detail and only a weak dependence of thein-medium nucleon“swelling”effects on the mass number of target nuclei is found ex-cept for very light loosely-bound nucleus.
The results of comprehensive microscopic optical model calculations are pres- ented for the K<sup>+</sup> scattering from <sup>6</sup>Li,<sup>12</sup>C,<sup>28</sup>Si and <sup>40</sup>Ca at incident momenta 400-800 MeV/c.The unconventional medium effect （i.e.the density-dependent correction for the K<sup>+</sup>-nucleon scattering amplitude） is considered in two approaches.Both results are in agreement with recent experimental data.The influence of the correction on K<sup>+</sup> scat- tering from different nuclei are discussed in detail and only a weak dependence of the in-medium nucleon“swelling”effects on the mass number of target nuclei is found ex- cept for very light loosely-bound nucleus.
基金
The project supportcd in part by the National Natural Science Foundation of China
