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The São Paulo Potential and the 3He Breakup Reaction at 130 MeV on 93Nb and 197Au
Brazilian Journal of Physics ( IF 1.6 ) Pub Date : 2021-01-18 , DOI: 10.1007/s13538-020-00819-x
E. V. Chimanski , L. A. Souza , B. V. Carlson

Nuclear reactions induced by weakly bound nuclei often result in the emission of light particles as products of the projectile breakup. The incident particle is expected to fragment before reaching the interior of the target nuclei, a characteristic that tends to favor forward angular emission. Although the first models developed for such reactions were proposed many decades ago by Udagawa and Tamura, Ichimura, Austern, Vincent, and Kasano, and Hussein and McVoy, to this date most of the attention has been dedicated to the breakup of the deuteron and other very weakly bound systems, while more strongly bound projectiles have not been fully explored. Here, we describe the production of protons and deuterons from the breakup of 3He. The breakup of 3He on two heavy targets, 93Nb and 197Au, is analyzed in this study. However, the incoming energy involved is much larger than that of the standard phenomenological optical potentials available in the literature for the 3He entrance channel. We have overcome this difficulty by using the São Paulo potential and adjusting the nuclear diffusivity. The deuteron inclusive spectra were calculated at several angles and compared well with the experimental data. Theoretical proton emission predictions are also given for future reference, since no inclusive measurements were performed for the targets under study. One of our goals is to verify the description of deuteron emission from fast projectiles, for which many partial waves contribute to the scattering process.



中文翻译:

130Nev和93Nb和197Au上的圣保罗电势和3He分解反应

弱结合核诱导的核反应通常导致发射弹丸破裂产物产生轻粒子。预期入射粒子在到达目标原子核内部之前会破碎,该特征倾向于偏向正向发射。尽管数十年前,宇田川和田村,市村,奥斯汀,文森特和卡萨诺,侯赛因和麦克沃伊就提出了为这种反应开发的第一个模型,但迄今为止,大多数注意力都集中在氘核和其他化合物的分解上。束缚非常弱的系统,而束缚更强的弹丸尚未得到充分探索。在这里,我们描述了3He分解产生的质子和氘核。本研究分析了3He在两个重靶93Nb和197Au上的分解。然而,所涉及的入射能量要比文献中有关3He进入通道的标准现象学光学势的能量大得多。我们通过使用圣保罗电势并调整核扩散率克服了这一困难。在几个角度计算氘核包含谱,并与实验数据进行比较。由于没有对所研究的目标进行全面的测量,因此也给出了理论质子发射的预测,以供将来参考。我们的目标之一是验证快速弹丸产生氘核的描述,为此,许多分波对散射过程有贡献。我们通过利用圣保罗电势并调整核扩散率克服了这一困难。在几个角度计算氘核包含谱,并与实验数据进行比较。由于没有对所研究的目标进行全面的测量,因此也给出了理论质子发射的预测,以供将来参考。我们的目标之一是验证快速弹丸产生氘核的描述,为此,许多分波对散射过程有贡献。我们通过使用圣保罗电势并调整核扩散率克服了这一困难。在几个角度计算氘核包含谱,并与实验数据进行比较。由于没有对所研究的目标进行全面的测量,因此也给出了理论质子发射的预测,以供将来参考。我们的目标之一是验证快速弹丸产生氘核的描述,为此,许多分波对散射过程有贡献。因为没有针对所研究的目标进行全面的测量。我们的目标之一是验证快速弹丸产生氘核的描述,为此,许多分波对散射过程有贡献。因为没有针对所研究的目标进行全面的测量。我们的目标之一是验证快速弹丸产生氘核的描述,为此,许多分波对散射过程有贡献。

更新日期:2021-01-19
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