论文标题

通过使用剥落 - 和(P,2p)诱导的裂变反应对裂变产率的全面研究

Comprehensive investigation of fission yields by using spallation- and (p,2p)-induced fission reactions in inverse kinematics

论文作者

Rodríguez-Sánchez, J. L., Graña-González, A., Benlliure, J., Chatillon, A., García-Jiménez, G., Taieb, J., Alvarez-Pol, H., Atar, L., Audouin, L., Authelet, G., Besteiro, A., Blanchon, G., Boretzky, K., Cabanelas, P., Casarejos, E., Cederkall, J., Cortina-Gil, D., Corsi, A., De Filippo, E., Feijoo, M., Galaviz, D., Gasparic, I., Gernhäuser, R., Haettner, E., Heil, M., Heinz, A., Holl, M., Jenegger, T., Ji, L., Johansson, H. T., Kelić-Heil, A., Kiselev, O. A., Klenze, P., Knyazev, A., Körper, D., Kröll, T., Lihtar, I., Litvinov, Y. A., Löher, B., Martorana, N., Morfouace, P., Mücher, D., Morales, S. Murillo, Obertelli, A., Panin, V., Park, J., Paschalis, S., Perea, A., Petri1, M., Pietri, S., Pirrone, S., Ponnath, L., Revel, A., Rhee, H. -B., Rose, L., Ross, D. M., Russotto, P., Simon, H., Stott, A., Sun, Y., Sürder, C., Taniuchi, R., Tengblad, O., Törnqvist, H. T., Trimarchi, M., Velardita, S., Vesic, J., Voss, B., Weick, H.

论文摘要

在过去的几十年中,反向运动学中的散布,碎裂和coulex诱导的裂变反应的测量提供了有价值的数据,以准确研究各种稳定和非稳定的重型核的大变形时的裂变动力学和核结构。为了更进一步,我们现在建议通过在反向运动学中使用准无(P,2p)散射反应来诱导裂变,这使我们能够通过使用两个即将爆发的质子的四巨球体重建化合物裂变系统的激发能。因此,这种新方法可能允许将激发能与裂变片段的电荷和质量分布以及裂变概率相关联,这是第一次直接直接访问裂变产率依赖于温度和裂变屏障高度的同时测量外来重型核的高度。基于此方法的第一个实验最近在GSI/公平设施中实现,此处给出了实验设置的详细描述。

In the last decades, measurements of spallation, fragmentation and Coulex induced fission reactions in inverse kinematics have provided valuable data to accurately investigate the fission dynamics and nuclear structure at large deformations of a large variety of stable and non-stable heavy nuclei. To go a step further, we propose now to induce fission by the use of quasi-free (p,2p) scattering reactions in inverse kinematics, which allows us to reconstruct the excitation energy of the compound fissioning system by using the four-momenta of the two outgoing protons. Therefore, this new approach might permit to correlate the excitation energy with the charge and mass distributions of the fission fragments and with the fission probabilities, given for the first time direct access to the simultaneous measurement of the fission yield dependence on temperature and fission barrier heights of exotic heavy nuclei, respectively. The first experiment based on this methodology was realized recently at the GSI/FAIR facility and a detailed description of the experimental setup is given here.

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