Academic Journal
A dynamical study of fusion hindrance with the Nakajima–Zwanzig projection method
| العنوان: | A dynamical study of fusion hindrance with the Nakajima–Zwanzig projection method |
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| المؤلفون: | Abe, Yasuhisa, Boilley, David, Hourdillé, Quentin, Shen, Caiwan |
| المساهمون: | Grand Accélérateur National d'Ions Lourds (GANIL), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Caen Normandie (UNICAEN), Normandie Université (NU) |
| المصدر: | PTEP https://hal.science/hal-03070591 PTEP, 2021, 2021 (2), pp.021D01. ⟨10.1093/ptep/ptab005⟩ |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] |
| الوصف: | International audience ; A new framework is proposed for the study of collisions between very heavy ions which lead to the synthesis of Super-Heavy Elements (SHE), to address the fusion hindrance phenomenon. The dynamics of the reaction is studied in terms of collective degrees of freedom undergoing relaxation processes with different time scales. The Nakajima–Zwanzig projection operator method is employed to eliminate fast variables and derive a dynamical equation for the reduced system with only slow variables. There, the time evolution operator is renormalised and an inhomogeneous term appears, which represents a propagation of the given initial distribution. The term results in a slip to the initial values of the slow variables. We expect that gives a dynamical origin for the so-called “injection point |$s$|” introduced by Swiatecki et al. in order to reproduce absolute values of measured cross sections for SHE. A formula for the slip is given in terms of physical parameters of the system, which confirms the results recently obtained with a Langevin equation, and permits us to compare various incident channels. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/arxiv/2011.13119; ARXIV: 2011.13119; INSPIRE: 1833569 |
| DOI: | 10.1093/ptep/ptab005 |
| الاتاحة: | https://hal.science/hal-03070591 https://hal.science/hal-03070591v1/document https://hal.science/hal-03070591v1/file/extraPTEP-Abe-v5.pdf https://doi.org/10.1093/ptep/ptab005 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.CDF5B2C9 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1093/ptep/ptab005 |
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