利用不稳定 B 和 C 同位素束流对弹核碎裂的系统研究
核实验
2016-05-11 v2
摘要
背景：描述核碎裂和碎裂-裂变的模型为规划核物理实验和未来放射性离子束设施提供重要输入。这些模型通常根据稳定束流实验的数据进行基准测试。未来，以奇异核为踏脚石的两步碎裂反应是抵达最富中子核的有前途工具，从而产生对这些反应进行描述的模型需求。目的：我们希望将当前可用的碎裂反应数据扩展到核素图上的轻奇异区域。此外，我们希望增进对特别是不稳定同位素的弹核碎裂的理解。方法：我们测量了 10,12-18C 和 10-15B 同位素与碳靶碰撞产生的弹核碎片。这些测量均在同一实验中完成，从而给出了非常一致的数据集。我们将我们的数据与模型计算进行比较。结果：相对论性 10,12-18C 和 10-15B 同位素轰击碳靶的具有不同末态中子数的一质子移除截面（1pxn）。将模型计算与数据比较，我们发现 EPAX 不能令人满意地描述数据。另一方面，使用 ABRABLA07，我们发现每个被磨去核子的平均激发能需要从 27 MeV 降低到 8.1 MeV。通过该降低，ABRABLA07 惊人地很好地描述了数据。结论：用一组一致的新数据将可用数据扩展到轻不稳定核，使得能够系统研究弹核碎裂中诱导的激发能的作用。最引人注目的是每个被磨去核子的平均激发能明显的质量依赖性。然而，这个与末态相互作用相关的参数需要进一步研究。
引用
@article{arxiv.1603.00323,
title = {Systematic investigation of projectile fragmentation using beams of unstable B and C isotopes},
author = {R. Thies and A. Heinz and T. Adachi and Y. Aksyutina and J. Alcantara-Núñes and S. Altstadt and H. Alvarez-Pol and N. Ashwood and T. Aumann and V. Avdeichikov and M. Barr and S. Beceiro-Novo and D. Bemmerer and J. Benlliure and C. A. Bertulani and K. Boretzky and M. J. G. Borge and G. Burgunder and M. Caamano and C. Caesar and E. Casarejos and W. Catford and J. Cederkäll and S. Chakraborty and M. Chartier and L. V. Chulkov and D. Cortina-Gil and R. Crespo and U. Datta and P. Díaz Fernández and I. Dillmann and Z. Elekes and J. Enders and O. Ershova and A. Estradé and F. Farinon and L. M. Fraile and M. Freer and M. Freudenberger and H. O. U. Fynbo and D. Galaviz and H. Geissel and R. Gernhäuser and K. Göbel and P. Golubev and D. Gonzalez Diaz and J. Hagdahl and T. Heftrich and M. Heil and M. Heine and A. Henriques and M. Holl and G. Ickert and A. Ignatov and B. Jakobsson and H. T. Johansson and B. Jonson and N. Kalantar-Nayestanaki and R. Kanungo and R. Knöbel and T. Kröll and R. Krücken and J. Kurcewicz and N. Kurz and M. Labiche and C. Langer and T. Le Bleis and R. Lemmon and O. Lepyoshkina and S. Lindberg and J. Machado and J. Marganiec and V. Maroussov and M. Mostazo and A. Movsesyan and A. Najafi and T. Nilsson and C. Nociforo and V. Panin and S. Paschalis and A. Perea and M. Petri and S. Pietri and R. Plag and A. Prochazka and A. Rahaman and G. Rastrepina and R. Reifarth and G. Ribeiro and M. V. Ricciardi and C. Rigollet and K. Riisager and M. Röder and D. Rossi and J. Sanchez del Rio and D. Savran and H. Scheit and H. Simon and O. Sorlin and V. Stoica and B. Streicher and J. T. Taylor and O. Tengblad and S. Terashima and Y. Togano and E. Uberseder and J. Van de Walle and P. Velho and V. Volkov and A. Wagner and F. Wamers and H. Weick and M. Weigand and C. Wheldon and G. Wilson and C. Wimmer and J. S. Winfield and P. Woods and D. Yakorev and M. V. Zhukov and A. Zilges and K. Zuber},
journal= {arXiv preprint arXiv:1603.00323},
year = {2016}
}