scholarly journals Analysis of the retrograde hydrogen boron fusion gains at inertial confinement fusion with volume ignition

1997 ◽  
Vol 15 (4) ◽  
pp. 565-574 ◽  
Author(s):  
Chr. Scheffel ◽  
R.J. Stening ◽  
H. Hora ◽  
R. Höpfl ◽  
J.M. Martinez-Val ◽  
...  
Keyword(s):  
Inertial Confinement Fusion ◽  
Fusion Reaction ◽  
Relativistic Correction ◽  
Stopping Power ◽  
Inertial Confinement ◽  
Optimum Temperature ◽  
Power Stations ◽  
Confinement Fusion ◽  
Nuclear Fusion Reaction ◽  
Volume Ignition

The very clean nuclear fusion reaction of hydrogen and boron-11 by inertial confinement arrives at conditions for power stations by volume ignition only at compressions to 100,000 times the solid state. The earlier (numerically) observed anomaly of decreasing gain at increasing density (retrograde behavior) is analyzed and the reason clarified: the strong stopping power mechanism, based on Gabor's collective model, is reaching its limit of too small Debye lengths at the extremely high densities because of the optimum temperature in the range of 30 keV due to the reabsorption of the bremsstrahlung. The relativistic correction of the bremsstrahlung for the always much higher temperatures after volume ignition is included from Maxon's model.

Volume ignition for inertial confinement fusion tested by different stopping power models

1996 ◽  
Author(s):  
H. Hora ◽  
S. Eliezer ◽  
J. J. Honrubia ◽  
R. Höpfl ◽  
J. M. Martinez-Val ◽  
...  
Keyword(s):  
Inertial Confinement Fusion ◽  
Stopping Power ◽  
Inertial Confinement ◽  
Confinement Fusion ◽  
Power Models ◽  
Volume Ignition

scholarly journals Volume ignition of laser driven fusion pellets and double layer effects

1988 ◽  
Vol 6 (2) ◽  
pp. 163-182 ◽  
Author(s):  
L. Cicchitelli ◽  
S. Eliezer ◽  
M. P. Goldsworthy ◽  
F. Green ◽  
H. Hora ◽  
...  
Keyword(s):  
Electric Fields ◽  
Inertial Confinement Fusion ◽  
Laser Pulses ◽  
Spark Ignition ◽  
State Density ◽  
Double Layers ◽  
Inertial Confinement ◽  
Confinement Fusion ◽  
Volume Compression ◽  
Volume Ignition

The realization of an ideal volume compression of laser-irradiated fusion pellets (by C. Yamanaka) opens the possibility for an alternative to spark ignition proposed for many years for inertial confinement fusion. A re-evaluation of the difficulties of the central spark ignition of laser driven pellets is given. The alternative volume compression theory, together with volume burn and volume ignition (discovered in 1977), have received less attention and are re-evaluated in view of the experimental verification by Yamanaka, generalized fusion gain formulas, and the variation of optimum temperatures derived at self-ignition. Reactor-level DT fusion with MJ-laser pulses and volume compression to 50 times the solid-state density are estimated. Dynamic electric fields and double layers at the surface and in the interior of plasmas result in new phenomena for the acceleration of thermal electrons to suprathermal electrons. Double layers also cause a surface tension which stabilizes against surface wave effects and Rayleigh–Taylor instabilities.

scholarly journals Thermodynamic and dynamical properties of dense ICF plasma

Nukleonika ◽  
2016 ◽  
Vol 61 (2) ◽  
pp. 125-129 ◽  
Author(s):  
Maratbek T. Gabdullin ◽  
Sandugash K. Kodanova ◽  
Tlekkabul S. Ramazanov ◽  
Moldir K. Issanova ◽  
Tomiris N. Ismagambetova
Keyword(s):  
Inertial Confinement Fusion ◽  
Calculated Data ◽  
Distribution Functions ◽  
Stopping Power ◽  
Inertial Confinement ◽  
Isothermal Plasma ◽  
Confinement Fusion ◽  
Quantum Mechanical Effects ◽  
Power And Energy ◽  
Theoretical Results

Abstract In present work, thermodynamic expressions were obtained through potentials that took into consideration long-range many-particle screening effects as well as short-range quantum-mechanical effects and radial distribution functions (RDFs). Stopping power of the projectile ions in dense, non-isothermal plasma was considered. One of the important values that describe the stopping power of the ions in plasma is the Coulomb logarithm. We investigated the stopping power of ions in inertial confinement fusion (ICF) plasma and other energetic characteristics of fuel. Calculations of ions energy losses in the plasma for different values of the temperature and plasma density were carried out. A comparison of the calculated data of ion stopping power and energy deposition with experimental and theoretical results of other authors was also performed.

scholarly journals Volume ignition targets for heavy-ion inertial fusion

1994 ◽  
Vol 12 (4) ◽  
pp. 681-717 ◽  
Author(s):  
J.M. Martínez-Val ◽  
S. Eliezer ◽  
M. Piera
Keyword(s):  
Inertial Confinement Fusion ◽  
Heavy Ion ◽  
Inertial Fusion ◽  
Inertial Confinement ◽  
Direct Drive ◽  
Ablation Process ◽  
Confinement Fusion ◽  
Indirect Drive ◽  
Energy Gains ◽  
Volume Ignition

Inertial confinement fusion (ICF) targets can be imploded by heavy-ion beams (HIBs) in order to obtain a highly compressed fuel microsphere. The hydrodynamic efficiency of the compression can be optimized by tuning the ablation process in order to produce the total evaporation of the pusher material by the end of the implosion. Such pusherless compressions produce very highly compressed targets for relatively short confinement times. However, these times are long enough for a fusion burst to take place, and burnup fractions of 30% and higher can be obtained if the volume ignition requirements are met. Numerical simulations demonstrate that targets of 1-mg DT driven by a few MJ can yield energy gains of over 70. Although direct drive is used in these simulations, the main conclusions about volume ignition are also applicable to indirect drive.

scholarly journals Synergism in inertial confinement fusion: a total direct energy conversion package

1989 ◽  
Vol 7 (3) ◽  
pp. 449-466 ◽  
Author(s):  
M. A. Prelas ◽  
E. J. Charlson
Keyword(s):  
Energy Conversion ◽  
Inertial Confinement Fusion ◽  
Fusion Reaction ◽  
Inertial Confinement ◽  
Fusion Reactions ◽  
Direct Energy Conversion ◽  
Transport Length ◽  
Confinement Fusion ◽  
Direct Energy ◽  
Energy Conversion Devices

The products of fusion reactions have unique properties which can be used for direct energy conversion. These products are neutrons and ions. Neutrons can be transported very long distances through solid materials and can interact with certain elements which have a very high absorption cross section. Ions on the other hand have a very short transport length even in a gaseous medium. It is possible to utilize these products in an inertial confinement fusion reactor with two different direct energy conversion devices: a nuclear-pumped laser using neutrons from the fusion reaction; a photon generator material combined with a photovoltaic converter using the ionic fusion products.It will be argued that a nuclear-pumped laser can be more efficient than a conventional laser. It will also be shown that an advanced energy conversion concept based on photon production and photovoltaics can produce ICF system efficiencies of 56%.

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