High-efficiency targets for high-gain inertial confinement fusion

Gardner, John H.; Bodner, Stephen E.
August 1986
Physics of Fluids (00319171);Aug86, Vol. 29 Issue 8, p2672
Academic Journal
Rocket efficiencies as high as 15% are possible using short wavelength lasers and moderately high aspect ratio pellet designs. These designs are made possible by two recent breakthroughs in physics constraints. First is the development of the induced spatial incoherence (ISI) technique, which allows uniform illumination of the pellet and relaxes the constraint of thermal smoothing, permitting the use of short wavelength laser light. Second is the discovery that the Rayleigh–Taylor growth rate is considerably reduced at short laser wavelengths. By taking advantage of the reduced constraints imposed by nonuniform laser illumination and Rayleigh–Taylor instability, pellets using (1)/(4) μm laser light and initial aspect ratios of about 10 (with in flight aspect ratios of about 150–200) may produce energy gains as high as 200–250.


Related Articles

  • A simple unfold method for Rutherford scattering, intense ion-beam spectrographs. Fehl, D. L.; Leeper, R. J.; Kensek, R. P. // Review of Scientific Instruments;Oct92, Vol. 63 Issue 10, p4786 

    Elastic Rutherford scattering with subsequent momentum analysis has become a powerful tool for analyzing intense, pulsed light-ion beams for inertial confinement fusion studies. The ion spectrum is obtained by mathematical inversion of the data. This paper reports a product-integration solution...

  • Plasmas and fluids. Schechter, Bruce // Physics Today;Apr86, Vol. 39 Issue 4, p39 

    Focuses on the importance of plasma physics and fluid physics to other physical sciences in the United States. Influence of computers on the development of fluid physics; Investigation on the particle-accelerator technologies; Discussion on the inertial-confinement fusion.

  • Three-dimensional modeling of capsule implosions in OMEGA tetrahedral hohlraums. Schnittman, J. D.; Craxton, R. S. // Physics of Plasmas;Jul2000, Vol. 7 Issue 7 

    Tetrahedral hohlraums have been proposed as a means for achieving the highly uniform implosions needed for ignition with inertial confinement fusion (ICF) [J. D. Schnittman and R. S. Craxton, Phys. Plasmas 3, 3786 (1996)]. Recent experiments on the OMEGA laser system have achieved good drive...

  • Implosion of reactor-size, gas-filled spherical shell targets driven by shaped pressure pulses. Piriz, A. R.; Atzeni, S. // Physics of Fluids B: Plasma Physics;May93, Vol. 5 Issue 5, p1605 

    The implosion of a family of reactor-size targets for inertial confinement fusion (ICF) is studied analytically and numerically. The targets consist of a deuterium–tritium (D–T) shell filled with D–T vapor and they are imploded by a multistep pressure pulse designed in such...

  • Spectrometry of charged particles from inertial-confinement-fusion plasmas. Séguin, F. H.; Frenje, J. A.; Li, C. K.; Hicks, D. G.; Kurebayashi, S.; Rygg, J. R.; Schwartz, B.-E.; Petrasso, R. D.; Roberts, S.; Soures, J. M.; Meyerhofer, D. D.; Sangster, T. C.; Knauer, J. P.; Sorce, C.; Glebov, V. Yu.; Stoeckl, C.; Phillips, T. W.; Leeper, R. J.; Fletcher, K. // Review of Scientific Instruments;Feb2003, Vol. 74 Issue 2, p975 

    High-resolution spectrometry of charged particles from inertial-confinement-fusion (ICF) experiments has become an important method of studying plasma conditions in laser-compressed capsules. In experiments at the 60-beam OMEGA laser facility IT. R. Boehly et al., Opt. Commun. 133, 495 (1997)],...

  • Neutron penumbral imaging of inertial confinement fusion targets at Phebus. Delage, O.; Garconnet, J.-P.; Schirmann, D.; Rouyer, A. // Review of Scientific Instruments;Feb1995, Vol. 66 Issue 2, p1205 

    Reports on the neutron penumbral imaging of inertial confinement fusion targets at the Phebus laser facility at Central d'Etudes de Limeil-Valenton in France. Deconvolution of the penumbral images; Description of the penumbral imaging system; Image reconstruction; Wiener filter approximation...

  • Advances in the national inertial fusion program of China. X. T. He; W. Y. Zhang // EPJ Web of Conferences;2013, Issue 59, p1 

    The planned inertial confinement fusion (ICF) ignition in China in around 2020 is to be accomplished in three steps. The first is carrying out target physics experiments in the existing laser facilities SG-II, SG-IIIP and SG-IIU (operating in 2012) of output energy 3-24 kJ at 3ω. Results...

  • Confinement and acceleration of pellet material by one-sided laser irradiation. Jarboe, Thomas R. // Physics of Fluids B: Plasma Physics;Apr93, Vol. 5 Issue 4, p1332 

    A simple model is developed to predict the shape of the laser–pellet interface for pellet material being accelerated by one-sided laser irradiation. The ablation pressure is assumed to be much greater than the yield strength of the pellet material which is treated as a gas. The model...

  • A ring coded-aperture microscope for high-resolution imaging of high-energy x rays. Ress, D.; Ciarlo, D. R.; Stewart, J. E.; Bell, P. M.; Kania, D. R. // Review of Scientific Instruments;Oct92, Vol. 63 Issue 10, p5086 

    We use annular apertures to produce coded images of inertial-confinement fusion targets. The images are formed with 4-9-keV x rays; they are unfolded to obtain high-quality estimates of the source spatial distribution. Excellent time-integrated images have been obtained using x-ray film as a...


Read the Article


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

Try another library?
Sign out of this library

Other Topics