Enhanced energy coupling for indirect-drive fast-ignition fusion targets
| العنوان: | Enhanced energy coupling for indirect-drive fast-ignition fusion targets |
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| المؤلفون: | W. W. Wang, B. H. Zhang, H. Zhang, L. H. Cao, Shaoping Zhu, G. L. Ren, L. Yang, S. Z. Wu, Xian-Tu He, L. Wei, Z. H. Yang, J. F. Gu, M. Q. He, S. Y. Zou, F. Lu, Jian Li, W. D. Zheng, B. Zhang, H. J. Liu, K. Du, H. Xu, L. F. Cao, W. M. Zhou, Y. M. Yang, Hong-bo Cai, Q. Tang, F. Zhang, J. F. Wu, Zhao-Shen Li, Z. Q. Yuan, B. Cui, L. Q. Shan, W. Qi, J. B. Chen, C. T. Zhou, Y. K. Ding, H. S. Zhang, B. Bi, M. H. Yu, Z. S. Dai, F. J. Ge, C. Tian, W. Y. Zhang, D. X. Liu, H. B. Du, Y. Q. Gu, W. S. Zhang |
| المصدر: | Nature Physics. 16:810-814 |
| بيانات النشر: | Springer Science and Business Media LLC, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, Resistive touchscreen, General Physics and Astronomy, Plasma, 01 natural sciences, 010305 fluids & plasmas, law.invention, Magnetic field, Computational physics, Ignition system, Physics::Plasma Physics, Hohlraum, law, 0103 physical sciences, Relativistic electron beam, 010306 general physics, National Ignition Facility, Inertial confinement fusion |
| الوصف: | One of the most promising approaches to reach a high gain in inertial confinement fusion is the fast ignition scheme. In this scheme, a relativistic electron beam is generated; this passes through the imploded plasma and deposits parts of its energy in the core. However, the large angular spread of the relativistic electron beam and the poorly controlled compression of the target affect realization of the fast ignition technique. Here, we demonstrate that indirectly driven (that is, driven by X-rays generated inside a gold hohlraum) implosions with a ‘high-foot’ and a short-coast time of less than 200 ps allow us to tightly compress the shell. Furthermore, we show the ability to optimize the symmetry of the imploding shell by changing the hohlraum length, successfully tuning a suitable tube-shaped shell to compensate for the large angular spread of the relativistic electron beam and to enhance the electron-to-core coupling efficiency via resistive magnetic fields. Benefiting from those experimental techniques, a significant enhancement in neutron yield was achieved in our indirectly driven fast ignition experiments. These results pave the way towards high-coupling fast ignition experiments with indirectly driven targets similar to those at the National Ignition Facility. Experiments realizing the indirect-drive fast ignition scheme for inertial confinement fusion are reported. Enabled by a tightly compressed target, an increase of neutron yield is observed. |
| تدمد: | 1745-2481 1745-2473 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::268c744c5069a75d9d9a95317f245272 https://doi.org/10.1038/s41567-020-0878-9 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........268c744c5069a75d9d9a95317f245272 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 17452481 17452473 |
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