Characterizing laser preheat for laser-driven magnetized liner inertial fusion using soft x-ray emission

D. H. Barnak, M. J. Bonino, P. Y. Chang, J. R. Davies, E. C. Hansen, D. R. Harding, J. L. Peebles, R. Betti

研究成果: Article同行評審

摘要

Laser heating of a gas in a cylindrical liner held in by a thin foil window is a critical process in the MagLIF (magnetized liner inertial fusion) concept [S. A. Slutz and R. A. Vesey, Phys. Rev. Lett. 108, 025003 (2012)]. Window burnthrough and gas heating for OMEGA scale MagLIF cylinders as a function of time have been determined using spectrally integrated soft x-ray diagnostics. Window laser absorption is classified in terms of the emitted x-rays from the window plasma as a function of laser energy and shows that the laser energy absorbed is weakly dependent on incident intensity. Radiation-hydrodynamic simulations overestimate the amount of laser energy absorbed by the window as evidenced by the increase in x-ray radiation across several photon energy bands compared to experiments. Gas temperatures inferred from soft x-ray emission from the front 1 mm of the liner are shown to evolve in time in a similar manner to simulation predictions. Soft x-ray emission from the gas within the region of the liner that is normally imploded is shown to meet the 100 eV requirements set by the initial point design for laser-driven MagLIF.

原文English
文章編號112709
期刊Physics of Plasmas
27
發行號11
DOIs
出版狀態Published - 2020 十一月 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

指紋 深入研究「Characterizing laser preheat for laser-driven magnetized liner inertial fusion using soft x-ray emission」主題。共同形成了獨特的指紋。

引用此