Achieving stable implosion through hydro-equivalent analysis for direct-driven inertial confinement fusion
The control of Rayleigh–Taylor instability (RTI) in target implosion compression is a classical problem in laser-driven inertial confinement fusion (ICF). Modeling the evolution of RTI by using high-dimensional radiation hydrodynamics simulations requires significant computational resources. In this...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Nuclear Fusion |
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| Online Access: | https://doi.org/10.1088/1741-4326/add74f |
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| author | Z. Li X.H. Yang G.B. Zhang B. Zeng B.H. Xu Z.H. Chen Y.Y. Ma F.Q. Shao J. Zhang |
| author_facet | Z. Li X.H. Yang G.B. Zhang B. Zeng B.H. Xu Z.H. Chen Y.Y. Ma F.Q. Shao J. Zhang |
| author_sort | Z. Li |
| collection | DOAJ |
| description | The control of Rayleigh–Taylor instability (RTI) in target implosion compression is a classical problem in laser-driven inertial confinement fusion (ICF). Modeling the evolution of RTI by using high-dimensional radiation hydrodynamics simulations requires significant computational resources. In this paper, we present a novel approach to evaluate and predict the growth of RTI in direct-driven ICF. The target implosion velocities and accelerations at critical moments are derived according to the laser profiles and the target structures by the hydro-equivalent analysis and spherical ablation theory, combined with the adiabat from the one-dimensional simulation. Then, combining with the nonlinear RTI theory, the RT spikes penetration ratio is used to evaluate the integrity of the target. The most stable laser profile and target structure design can be quickly selected and the development of RTI is verified in the two-dimensional radiation hydrodynamics simulation. The results show that the areal density is increased by 68.2% by applying the most stable laser profile and target structure design compared with that of the initial case. These findings have significant implications for enhancing direct-drive ICF instability control. |
| format | Article |
| id | doaj-art-a05f78a11fc44da2b0b252996cd2be61 |
| institution | OA Journals |
| issn | 0029-5515 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nuclear Fusion |
| spelling | doaj-art-a05f78a11fc44da2b0b252996cd2be612025-08-20T02:25:58ZengIOP PublishingNuclear Fusion0029-55152025-01-0165606602410.1088/1741-4326/add74fAchieving stable implosion through hydro-equivalent analysis for direct-driven inertial confinement fusionZ. Li0https://orcid.org/0000-0002-3893-9705X.H. Yang1https://orcid.org/0000-0003-1056-8663G.B. Zhang2https://orcid.org/0000-0002-3426-2127B. Zeng3B.H. Xu4Z.H. Chen5https://orcid.org/0000-0002-7283-2995Y.Y. Ma6F.Q. Shao7J. Zhang8College of Science, National University of Defense Technology , Changsha 410073, ChinaCollege of Science, National University of Defense Technology , Changsha 410073, China; Collaborative Innovation Centre of IFSA, Shanghai Jiao Tong University , Shanghai 200240, ChinaCollege of Science, National University of Defense Technology , Changsha 410073, ChinaCollege of Science, National University of Defense Technology , Changsha 410073, ChinaCollege of Science, National University of Defense Technology , Changsha 410073, ChinaCollege of Science, National University of Defense Technology , Changsha 410073, ChinaSchool of Physics and Electronics, Hunan University , Changsha 410082, China; School of Automation and Electronic Information, Xiangtan University , Hunan 411105, ChinaCollege of Science, National University of Defense Technology , Changsha 410073, ChinaCollaborative Innovation Centre of IFSA, Shanghai Jiao Tong University , Shanghai 200240, China; Key Laboratory for Laser Plasmas (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University , Shanghai 200240, ChinaThe control of Rayleigh–Taylor instability (RTI) in target implosion compression is a classical problem in laser-driven inertial confinement fusion (ICF). Modeling the evolution of RTI by using high-dimensional radiation hydrodynamics simulations requires significant computational resources. In this paper, we present a novel approach to evaluate and predict the growth of RTI in direct-driven ICF. The target implosion velocities and accelerations at critical moments are derived according to the laser profiles and the target structures by the hydro-equivalent analysis and spherical ablation theory, combined with the adiabat from the one-dimensional simulation. Then, combining with the nonlinear RTI theory, the RT spikes penetration ratio is used to evaluate the integrity of the target. The most stable laser profile and target structure design can be quickly selected and the development of RTI is verified in the two-dimensional radiation hydrodynamics simulation. The results show that the areal density is increased by 68.2% by applying the most stable laser profile and target structure design compared with that of the initial case. These findings have significant implications for enhancing direct-drive ICF instability control.https://doi.org/10.1088/1741-4326/add74fRayleigh–Taylor instabilityinertial confinement fusionhydro-equivalent |
| spellingShingle | Z. Li X.H. Yang G.B. Zhang B. Zeng B.H. Xu Z.H. Chen Y.Y. Ma F.Q. Shao J. Zhang Achieving stable implosion through hydro-equivalent analysis for direct-driven inertial confinement fusion Nuclear Fusion Rayleigh–Taylor instability inertial confinement fusion hydro-equivalent |
| title | Achieving stable implosion through hydro-equivalent analysis for direct-driven inertial confinement fusion |
| title_full | Achieving stable implosion through hydro-equivalent analysis for direct-driven inertial confinement fusion |
| title_fullStr | Achieving stable implosion through hydro-equivalent analysis for direct-driven inertial confinement fusion |
| title_full_unstemmed | Achieving stable implosion through hydro-equivalent analysis for direct-driven inertial confinement fusion |
| title_short | Achieving stable implosion through hydro-equivalent analysis for direct-driven inertial confinement fusion |
| title_sort | achieving stable implosion through hydro equivalent analysis for direct driven inertial confinement fusion |
| topic | Rayleigh–Taylor instability inertial confinement fusion hydro-equivalent |
| url | https://doi.org/10.1088/1741-4326/add74f |
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