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首页> 外文会议>AIP Conference Proceedings vol.865; China-Japan Joint Nuclear Physics Symposium; 20060516-20; Shanghai(CN) >Measurements of the reaction cross sections and momentum distributions for ~(23)Al neighbouring nuclei
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Measurements of the reaction cross sections and momentum distributions for ~(23)Al neighbouring nuclei

机译：〜（23）Al邻近原子核反应截面和动量分布的测量

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摘要

The reaction cross sections and momentum distributions for ~(23)Al and its neighbouring nuclei have been measured at the Riken Projectile Fragment Separator (RIPS). The primary beam of 135 A MeV ~(28)Si was used to produce the secondary beams. The measurement of σ_R was carried out by using a transmission-type method. σ_R was determined by the ratios between incident and outgoing particles without reaction from both target-in and target-out measurements. P_// of fragment from breakup reactions was determined from the measured TOF between F2 and F3. An enhancement is observed in σ_R for ~(23)Al compared to its neighbors. The P_// of ~(22)Mg fragments from ~(23)Al breakup have been obtained. The width of the distributions is found to be consistent with prediction by the Goldhaber Model. The experimental data are discussed in the framework of Glauber model. The analysis of P_// indicates a dominant d-wave component in the ground state of ~(23)Al. This confirms the result of a recent magnetic moment measurement which indicates that the valence proton is in d-wave.
机译：〜（23）Al及其邻近原子核的反应截面和动量分布已在Riken弹丸碎片分离器（RIPS）上进行了测量。 135 A MeV〜（28）Si的初级束用于产生次级束。 σ_R的测定通过透射型方法进行。 σ_R由入射和流出粒子之间的比率确定，而不受目标输入和目标输出测量值的影响。根据F2和F3之间的测得的TOF确定来自分解反应的片段的P //。与邻元素相比，〜（23）Al的σ_R增强。从〜（23）Al断裂中获得了〜（22）Mg片段的P _ //。发现分布的宽度与Goldhaber模型的预测一致。在Glauber模型的框架内讨论了实验数据。对P _ //的分析表明，在〜（23）Al的基态中占主导地位的d波成分。这证实了最近的磁矩测量结果，该结果表明化合价质子处于d波中。

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