惯性聚变内爆在燃烧等离子体 regime 下的实验
等离子体物理
2021-11-09 v1 高能物理 - 实验
摘要
美国国家点火装置(NIF)目前正开展一项实验计划，将氘氚(DT)燃料压缩至足以实现聚变和能量增益的密度与温度。所研究的主要途径是间接驱动惯性约束聚变(ICF)，即由激光加热高Z辐射腔(黑腔)，将入射能量转化为X射线辐射，进而驱动填充DT燃料的靶丸发生内爆。先前的实验报道了DT燃料增益超过 unity [O.A. Hurricane et al., Nature 506, 343 (2014)]，随后超过了内爆燃料的动能[S. Le Pape et al., Phys. Rev. Lett. 120, 245003 (2018)]。我们报道了近期在NIF上取得创纪录聚变中子产额(大于100 kJ、瞬时聚变功率超过1 PW)的实验，并首次进入燃烧等离子体 regime，其中聚变α粒子对燃料的加热超过了通过压缩传递给燃料的能量。这是通过增大高密度碳(HDC)靶丸尺寸、增加能量耦合，同时控制对称性和内爆设计参数实现的。两种策略在控制辐射通量对称性从而控制内爆对称性方面取得成功：通过等离子体波在激光锥之间转移能量，以及改变黑腔形状。在进行这些实验时，我们控制了已知的退化来源。本文展示了这些实验如何被执行以产生创纪录性能，并证明了数据保真度，使我们得出结论：这些打靶已进入燃烧等离子体 regime。
引用
@article{arxiv.2111.04640,
title = {Experiments conducted in the burning plasma regime with inertial fusion implosions},
author = {J. S. Ross and J. E. Ralph and A. B. Zylstra and A. L. Kritcher and H. F. Robey and C. V. Young and O. A. Hurricane and D. A. Callahan and K. L. Baker and D. T. Casey and T. Doeppner and L. Divol and M. Hohenberger and S. Le Pape and A. Pak and P. K. Patel and R. Tommasini and S. J. Ali and P. A. Amendt and L. J. Atherton and B. Bachmann and D. Bailey and L. R. Benedetti and L. Berzak Hopkins and R. Betti and S. D. Bhandarkar and R. M. Bionta and N. W. Birge and E. J. Bond and D. K. Bradley and T. Braun and T. M. Briggs and M. W. Bruhn and P. M. Celliers and B. Chang and T. Chapman and H. Chen and C. Choate and A. R. Christopherson and D. S. Clark and J. W. Crippen and E. L. Dewald and T. R. Dittrich and M. J. Edwards and W. A. Farmer and J. E. Field and D. Fittinghoff and J. Frenje and J. Gaffney and M. Gatu Johnson and S. H. Glenzer and G. P. Grim and S. Haan and K. D. Hahn and G. N. Hall and B. A. Hammel and J. Harte and E. Hartouni and J. E. Heebner and V. J. Hernandez and H. Herrmann and M. C. Herrmann and D. E. Hinkel and D. D. Ho and J. P. Holder and W. W. Hsing and H. Huang and K. D. Humbird and N. Izumi and L. C. Jarrott and J. Jeet and O. Jones and G. D. Kerbel and S. M. Kerr and S. F. Khan and J. Kilkenny and Y. Kim and H. Geppert Kleinrath and V. Geppert Kleinrath and C. Kong and J. M. Koning and J. J. Kroll and O. L. Landen and S. Langer and D. Larson and N. C. Lemos and J. D. Lindl and T. Ma and M. J. MacDonald and B. J. MacGowan and A. J. Mackinnon and S. A. MacLaren and A. G. MacPhee and M. M. Marinak and D. A. Mariscal and E. V. Marley and L. Masse and K. Meaney and N. B. Meezan and P. A. Michel and M. Millot and J. L. Milovich and J. D. Moody and A. S. Moore and J. W. Morton and T. Murphy and K. Newman and J. -M. G. Di Nicola and A. Nikroo and R. Nora and M. V. Patel and L. J. Pelz and J. L. Peterson and Y. Ping and B. B. Pollock and M. Ratledge and N. G. Rice and H. Rinderknecht and M. Rosen and M. S. Rubery and J. D. Salmonson and J. Sater and S. Schiaffino and D. J. Schlossberg and M. B. Schneider and C. R. Schroeder and H. A. Scott and S. M. Sepke and K. Sequoia and M. W. Sherlock and S. Shin and V. A. Smalyuk and B. K. Spears and P. T. Springer and M. Stadermann and S. Stoupin and D. J. Strozzi and L. J. Suter and C. A. Thomas and R. P. J. Town and E. R. Tubman and P. L. Volegov and C. R. Weber and K. Widmann and C. Wild and C. H. Wilde and B. M. Van Wonterghem and D. T. Woods and B. N. Woodworth and M. Yamaguchi and S. T. Yang and G. B. Zimmerman},
journal= {arXiv preprint arXiv:2111.04640},
year = {2021}
}