Role of two-body dissipation on the mean-field dynamics validity
The role of two-body dissipation in nuclear reactions at energies of several times Coulomb barrier remains unclear but is crucial for understanding the mechanisms of deep-inelastic reactions. In this letter, we report a systematic analysis of two-body dissipation effects on the validity of mean-fiel...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Physics Letters B |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325005568 |
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| author | Yingge Huang Hui Wang Erxi Xiao Long Zhu Jun Su |
| author_facet | Yingge Huang Hui Wang Erxi Xiao Long Zhu Jun Su |
| author_sort | Yingge Huang |
| collection | DOAJ |
| description | The role of two-body dissipation in nuclear reactions at energies of several times Coulomb barrier remains unclear but is crucial for understanding the mechanisms of deep-inelastic reactions. In this letter, we report a systematic analysis of two-body dissipation effects on the validity of mean-field dynamics, enabled by the TDHF-QRx approach, which incorporates the collision term via the relaxation-time approximation rather than full collision calculations. For deep-inelastic reactions, the contact time between nuclei is found to increase, resulting in changes to the reaction process and fragment properties such as scattering angles and total kinetic energy. These changes become important with the increase of reaction energy and decrease of impact parameter. We identify the range of reaction condition where two-body dissipation becomes significant, providing valuable insights for the applicability of mean-field dynamics approaches. The limitations of model, particularly those arising from the incomplete conservation of the locality of two-body dissipation within the quantum framework, are also discussed. |
| format | Article |
| id | doaj-art-11b600a069c648b8b7e7f63cd589ebca |
| institution | Kabale University |
| issn | 0370-2693 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj-art-11b600a069c648b8b7e7f63cd589ebca2025-08-20T04:01:02ZengElsevierPhysics Letters B0370-26932025-09-0186813979510.1016/j.physletb.2025.139795Role of two-body dissipation on the mean-field dynamics validityYingge Huang0Hui Wang1Erxi Xiao2Long Zhu3Jun Su4Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, ChinaSino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, ChinaSino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, ChinaSino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, ChinaCorresponding author.; Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, China; Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing, 102413, ChinaThe role of two-body dissipation in nuclear reactions at energies of several times Coulomb barrier remains unclear but is crucial for understanding the mechanisms of deep-inelastic reactions. In this letter, we report a systematic analysis of two-body dissipation effects on the validity of mean-field dynamics, enabled by the TDHF-QRx approach, which incorporates the collision term via the relaxation-time approximation rather than full collision calculations. For deep-inelastic reactions, the contact time between nuclei is found to increase, resulting in changes to the reaction process and fragment properties such as scattering angles and total kinetic energy. These changes become important with the increase of reaction energy and decrease of impact parameter. We identify the range of reaction condition where two-body dissipation becomes significant, providing valuable insights for the applicability of mean-field dynamics approaches. The limitations of model, particularly those arising from the incomplete conservation of the locality of two-body dissipation within the quantum framework, are also discussed.http://www.sciencedirect.com/science/article/pii/S0370269325005568Two-body dissipationRelaxation-time approximationTDHF-QRxHeavy-ion collisions |
| spellingShingle | Yingge Huang Hui Wang Erxi Xiao Long Zhu Jun Su Role of two-body dissipation on the mean-field dynamics validity Physics Letters B Two-body dissipation Relaxation-time approximation TDHF-QRx Heavy-ion collisions |
| title | Role of two-body dissipation on the mean-field dynamics validity |
| title_full | Role of two-body dissipation on the mean-field dynamics validity |
| title_fullStr | Role of two-body dissipation on the mean-field dynamics validity |
| title_full_unstemmed | Role of two-body dissipation on the mean-field dynamics validity |
| title_short | Role of two-body dissipation on the mean-field dynamics validity |
| title_sort | role of two body dissipation on the mean field dynamics validity |
| topic | Two-body dissipation Relaxation-time approximation TDHF-QRx Heavy-ion collisions |
| url | http://www.sciencedirect.com/science/article/pii/S0370269325005568 |
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