Radiation-temperature shock scaling of 1 ns laser-driven hohlraums

Yongsheng Li; Ke Lan; Dongxian Lai; Yaoming Gao; Wenbing Pei
April 2010
Physics of Plasmas;Apr2010, Vol. 17 Issue 4, p042704
Academic Journal
Simulations of the x-ray ablation process of aluminum are performed using a one-dimensional multigroup radiation hydrodynamic code RDMG [F. Tinggui et al., Chin. J. Comput. Phys. 16, 199 (1999)]. The scaling relation of the peak temperatures of the x-ray sources with the shock velocities is studied, and its dependence on the temporal profile and the length of the x-ray sources is described and analyzed in this paper. A scaling relation applicable to x-ray sources of 1 ns pulse laser-driven hohlraums is proposed, the dependence of which is studied and found to be negligible. Our scaling relation of radiation temperature versus shock velocity is about 10 eV lower than that proposed by Kauffman et al. [Phys. Rev. Lett. 73, 2320 (1994)] for shock velocity of (4–8)×106 cm/s.


Related Articles

  • Experimental study of the hydrodynamic trajectory of an x-ray-heated gold plasma. Jiamin Yang; Guangwei Meng; Tuo Zhu; Jiyan Zhang; Jinhong Li; Xiaoan He; Rongqing Yi; Yan Xu; Zhiming Hu; Yaonan Ding; Shenye Liu; Yongkun Ding // Physics of Plasmas;Jun2010, Vol. 17 Issue 6, p062702 

    Hydrodynamic processes of radiation-ablated high-Z plasmas have great influence on the x-ray radiation transport both in a high-Z tube with low-Z foam filling and in a low-Z filling indirect drive cavity. Using the intense x-ray radiation to heat a low-Z foam-tamped high-Z gold plate from a half...

  • K-shell x-ray yield scaling for aluminum x-pinch plasmas. Kalantar, D. H.; Hammer, D. A.; Mittal, K. C.; Qi, N.; Young, F. C.; Stephanakis, S. J.; Burkhalter, P. G.; Mehlman, G.; Newman, D. A. // Journal of Applied Physics;6/15/1993, Vol. 73 Issue 12, p8134 

    Reports on the results of experiments that measured and characterized the K-shell radiation from aluminum x-pinch plasmas at peak driving currents. Range of x-ray yields in the experiments; Examples of x-ray diagnostics used for experiments on the LION accelerator at Cornell University of...

  • “Using’ what we got”: Calculating X-ray Spectra for Non-Equilibrium Plasmas. Dewey, Daniel // AIP Conference Proceedings;2005, Vol. 774 Issue 1, p219 

    It is desirable to calculate the X-ray emission spectrum from a (region of a) plasma that is not in ionization equilibrium, e.g., with application to supernova remnants, SNRs. Such a plasma will generally have ionization fractions that are not directly related to the local electron temperature...

  • X-ray radiography and scattering diagnosis of dense shock-compressed matter. Le Pape, Sebastien; Neumayer, Paul; Fortmann, Carsten; Döppner, Tilo; Davis, Paul; Kritcher, Andrea; Landen, Otto; Glenzer, Siegfried // Physics of Plasmas;May2010, Vol. 17 Issue 5, p056309 

    Highly coupled Boron plasma has been probed by spectrally resolving an x-ray source scattered by the plasma. Electron density was inferred from the inelastic feature in the collective scattering regime. In addition, the mass density inferred from the noncollective x-ray Thomson scattering has...

  • Dynamic hohlraum radiation hydrodynamics. Bailey, J. E.; Chandler, G. A.; Mancini, R. C.; Slutz, S. A.; Rochau, G. A.; Bump, M.; Buris-Mog, T. J.; Cooper, G.; Dunham, G.; Golovkin, I.; Kilkenny, J. D.; Lake, P. W.; Leeper, R. J.; Lemke, R.; MacFarlane, J. J.; Mehlhorn, T. A.; Moore, T. C.; Nash, T. J.; Nikroo, A.; Nielsen, D. S. // Physics of Plasmas;May2006, Vol. 13 Issue 5, p056703 

    Z-pinch dynamic hohlraums are a promising indirect-drive inertial confinement fusion approach. Comparison of multiple experimental methods with integrated Z-pinch/hohlraum/capsule computer simulations builds understanding of the hohlraum interior conditions. Time-resolved x-ray images determine...

  • Recombination X-ray Radiation from Plasma Liners. Oreshkin, V. I.; Baksht, R. B.; Labetskiĭ, A. Yu.; Ratakhin, N. A.; Russkikh, A. G.; Chaikovsky, S. A.; Fedyunin, A. V.; Shishlov, A. V. // Technical Physics Letters;Jul2005, Vol. 31 Issue 7, p567 

    The possibility of creating a high-power X-ray source based on the recombination radiation mechanism has been studied and analyzed. The recombination X-ray radiation from neon, aluminum, and argon was obtained in experiments with plasma liners performed on the GIT-12 setup using a current pulse...

  • Modeling of Ni-like Molybdenum X-ray Laser by Ray Tracing Algorithm. Kurnali, S.; Güven, M. H.; Demir, A. // AIP Conference Proceedings;2007, Vol. 899 Issue 1, p325 

    Ni-like Molybdenum plasma is modeled with atomic physics and hydrodynamic code EHYBRID. In the model the Molybdenum slab target is pumped with double pulse and 1054 nm Nd:Glass laser is used as the pumping laser. The most efficient plasma condition obtained with the configuration of a main pulse...

  • Nonequilibrium hydrodynamic theory of scattering of radiation from plasma. Khan, T. P. // Journal of Applied Physics;2/1/1989, Vol. 65 Issue 3, p1364 

    Presents a study which derived the spectrum of radiation scattered by plasma through the use of nonequilibrium hydrodynamic theory of fluctuations. Examination of the principal features of ion-acoustic resonances; Discussion on the Alder-Wainwright velocity autocorrelation function; Assessment...

  • X-ray line emission from laser-produced spherical plasma flows. Mostacci, Domiziano; Montierth, Leland M.; Dinguirard, Jean-Pierre; Morse, Richard L. // Physics of Fluids B: Plasma Physics;Oct89, Vol. 1 Issue 10, p2106 

    A numerical model has been developed for calculating x-ray line emission from spherical plasma flows and has been applied to a laser-heated, ablating aluminum target. The results are in good agreement with previous experimental work. The intensity ratios of the dominant lines are predicted in...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics