scholarly journals On the use of KrF lasers for fast ignition

2008 ◽  
Vol 26 (4) ◽  
pp. 575-582 ◽  
Author(s):  
I.B. Földes ◽  
S. Szatmári
Keyword(s):  
Penetration Depth ◽  
Short Wavelength ◽  
Fast Ignition ◽  
Test Facility ◽  
Inertial Fusion ◽  
Smoothing Techniques ◽  
Multiple Beam ◽  
Fast Ignitor ◽  
Krf Laser ◽  
Diode Pumped

AbstractThe KrF laser has been considered as an inertial fusion driver alternative to diode-pumped lasers. The possibilities of KrF lasers for fast ignition is supported by their short wavelength and the corresponding larger penetration depth together with the possible use of the same amplifiers for fusion driver and fast ignitor. It is shown that in the case of a fusion test facility both the energy and the intensity requirements can be fulfilled. A fast ignitor using 20 ps KrF pulses requires beam smoothing techniques after angular multiplexing due to the coherence of the beam. A multiple beam fast ignitor is suggested as an alternative in which a high number of beams of 1 ps duration are separately focused on the fuel after polarization demultiplexing. This arrangement allows even the pulse-forming of the ignitor.

scholarly journals Studies on laser-driven generation of fast high-density plasma blocks for fast ignition

2006 ◽  
Vol 24 (2) ◽  
pp. 249-254 ◽  
Author(s):  
J. BADZIAK ◽  
S. GŁOWACZ ◽  
H. HORA ◽  
S. JABŁOŃSKI ◽  
J. WOŁOWSKI
Keyword(s):  
Proton Beam ◽  
Laser Energy ◽  
Skin Layer ◽  
Fast Ignition ◽  
High Density ◽  
Proton Density ◽  
Fast Ignitor ◽  
Ignition Threshold ◽  
Density Plasma

The properties of plasma (proton) block driven by the laser-induced skin-layer ponderomotive acceleration (S-LPA) mechanism are discussed. It is shown that the proton density of the plasma block is about a thousand times higher than that of the proton beam produced by the target normal sheath acceleration (TNSA) mechanism. Such a high-density plasma (proton) block can be considered as a fast ignitor of fusion targets. The estimates show that using the S-LPA driven plasma block, the ignition threshold for precompressed DT fuel can be reached at the ps laser energy ≤ 100 kJ.

scholarly journals Computational optimization of indirect-driven targets for ignition and the engineering test facility

1997 ◽  
Vol 15 (1) ◽  
pp. 145-149 ◽  
Author(s):  
E.N. Avrorin ◽  
V.A. Lykov ◽  
V.E. Chernyakov ◽  
A.N. Shushlebin ◽  
K.A. Mustafin ◽  
...  
Keyword(s):  
Heavy Ion ◽  
High Energy ◽  
Fast Ignition ◽  
Test Facility ◽  
Energy Yield ◽  
Powerful Laser ◽  
Computational Optimization ◽  
Main Driver ◽  
Thermonuclear Ignition

The results of ID-ERA and 2D-TIGR, OMEGA codes calculations of compression and burn of indirect-driven targets for the thermonuclear ignition and Engineering Test Facility are presented. The possibility to obtain high-energy yield of G > 100 with driver energy of Ed = 5−10 MJ by using the heavy-ion one-beam accelerator as the main driver and powerful laser for fast ignition of thermonuclear detonation of cylindrical targets is pointed out.

scholarly journals An Improved Mathematical Model for Accurate Prediction of the Heavy Oil Production Rate during the SAGD Process

Processes ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 235
Author(s):  
Aria Rahimbakhsh ◽  
Morteza Sabeti ◽  
Farshid Torabi
Keyword(s):  
Production Rate ◽  
Penetration Depth ◽  
Oil Recovery ◽  
Current Model ◽  
Oil Production ◽  
Exponential Model ◽  
Analytical Models ◽  
Test Facility ◽  
Drainage Rate ◽  
Heat Penetration

Steam-assisted gravity drainage (SAGD) is one of the most successful thermal enhanced oil recovery (EOR) methods for cold viscose oils. Several analytical and semi-analytical models have been theorized, yet the process needs more studies to be conducted to improve quick production rate predictions. Following the exponential geometry theory developed for finding the oil production rate, an upgraded predictive model is presented in this study. Unlike the exponential model, the current model divides the steam-oil interface into several segments, and then the heat and mass balances are applied to each of the segments. By manipulating the basic equations, the required formulas for estimating the oil drainage rate, location of interface, heat penetration depth of steam ahead of the interface, and the steam required for the operation are obtained theoretically. The output of the proposed theory, afterwards, is validated with experimental data, and then finalized with data from the real SAGD process in phase B of the underground test facility (UTF) project. According to the results, the model with a suitable heat penetration depth correlation can produce fairly accurate outputs, so the idea of using this model in field operations is convincing.

Fast ignition of an inertial fusion target with a solid noncryogenic fuel by an ion beam

2015 ◽  
Vol 41 (9) ◽  
pp. 725-736 ◽  
Author(s):  
S. Yu. Gus’kov ◽  
N. V. Zmitrenko ◽  
D. V. Il’in ◽  
V. E. Sherman
Keyword(s):  
Ion Beam ◽  
Fast Ignition ◽  
Inertial Fusion ◽  
Fusion Target

Krypton Fluoride (KrF) Laser Driver for Inertial Fusion Energy

2013 ◽  
Vol 64 (2) ◽  
pp. 179-186 ◽  
Author(s):  
Matthew F. Wolford ◽  
John D. Sethian ◽  
Matthew C. Myers ◽  
Frank Hegeler ◽  
John L. Giuliani ◽  
...  
Keyword(s):  
Fusion Energy ◽  
Inertial Fusion ◽  
Inertial Fusion Energy ◽  
Krypton Fluoride ◽  
Laser Driver ◽  
Krf Laser

scholarly journals Density gradient effects on beam plasma linear instabilities for fast ignition scenario

2006 ◽  
Vol 24 (2) ◽  
pp. 269-273 ◽  
Author(s):  
ANTOINE BRET ◽  
CLAUDE DEUTSCH
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Density Gradient ◽  
Relativistic Electron Beam ◽  
Fast Ignition ◽  
The Other ◽  
Inertial Fusion ◽  
Linear Phase ◽  
Unstable System ◽  
Gradient Effects

In the fast ignition scenario for inertial fusion, a relativistic electron beam is supposed to travel from the side of the fusion pellet to its core. One one hand, a relativistic electron beam passing through a plasma is a highly unstable system. On the other hand, the pellet core is denser than its side by four orders of magnitude so that the beam makes its way through a important density gradient. We here investigate the effect of this gradient on the instabilities. It is found that they should develop so early that gradient effects are negligible in the linear phase.

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