Negative pion stopping in ultra dense and hot DT targets of ICF fast ignition concern

2013 ◽  
Vol 79 (4) ◽  
pp. 391-395 ◽  
Author(s):  
CLAUDE DEUTSCH ◽  
PATRICE FROMY
Keyword(s):  
Fast Ignition ◽  
Thermonuclear Reactions ◽  
Negative Pion ◽  
Target Plasma ◽  
Confinement Fusion

AbstractIn order to implement a Scenario of π− catalysis of Deuterium–Tritium (DT) thermonuclear reactions in a dense and hot precompressed target plasma envisioned in the Intertial Confinement Fusion (ICF) fast ignition approach, we pay detailed attention to the stopping of negative pions arising from electro-disintregration of target D and T nuclei by ultra-relativistic e-beams. Emphasis is put on a mostly non-relativistic pion velocity regime (E ≤ 10 MeV).

scholarly journals Generation of shock waves in dense plasmas by high-intensity laser pulses

Nukleonika ◽  
2015 ◽  
Vol 60 (2) ◽  
pp. 193-198 ◽  
Author(s):  
John Pasley ◽  
I. A. Bush ◽  
Alexander P. L. Robinson ◽  
P. P. Rajeev ◽  
S. Mondal ◽  
...  
Keyword(s):  
Shock Waves ◽  
Laser Plasma ◽  
Inertial Confinement Fusion ◽  
Laser Pulses ◽  
Fast Ignition ◽  
Intense Laser ◽  
Inertial Confinement ◽  
Relative Significance ◽  
Wide Range ◽  
Confinement Fusion

Abstract When intense short-pulse laser beams (I > 1022 W/m2, τ < 20 ps) interact with high density plasmas, strong shock waves are launched. These shock waves may be generated by a range of processes, and the relative significance of the various mechanisms driving the formation of these shock waves is not well understood. It is challenging to obtain experimental data on shock waves near the focus of such intense laser–plasma interactions. The hydrodynamics of such interactions is, however, of great importance to fast ignition based inertial confinement fusion schemes as it places limits upon the time available for depositing energy in the compressed fuel, and thereby directly affects the laser requirements. In this manuscript we present the results of magnetohydrodynamic simulations showing the formation of shock waves under such conditions, driven by the j × B force and the thermal pressure gradient (where j is the current density and B the magnetic field strength). The time it takes for shock waves to form is evaluated over a wide range of material and current densities. It is shown that the formation of intense relativistic electron current driven shock waves and other related hydrodynamic phenomena may be expected over time scales of relevance to intense laser–plasma experiments and the fast ignition approach to inertial confinement fusion. A newly emerging technique for studying such interactions is also discussed. This approach is based upon Doppler spectroscopy and offers promise for investigating early time shock wave hydrodynamics launched by intense laser pulses.

scholarly journals Limitation on Prepulse Level for Cone-Guided Fast-Ignition Inertial Confinement Fusion

2010 ◽  
Vol 104 (5) ◽  
Author(s):  
A. G. MacPhee ◽  
L. Divol ◽  
A. J. Kemp ◽  
K. U. Akli ◽  
F. N. Beg ◽  
...  
Keyword(s):  
Inertial Confinement Fusion ◽  
Fast Ignition ◽  
Inertial Confinement ◽  
Confinement Fusion

Ignition and Burn Properties of DT/D3He Fuel for Fast-Ignition Inertial Confinement Fusion

2009 ◽  
Vol 56 (1) ◽  
pp. 401-404 ◽  
Author(s):  
Y. Nakao ◽  
M. Katsube ◽  
T. Ohmura ◽  
Y. Saito ◽  
T. Johzaki ◽  
...  
Keyword(s):  
Inertial Confinement Fusion ◽  
Fast Ignition ◽  
Inertial Confinement ◽  
Confinement Fusion

Power deposition of deuteron beam in fast ignition

2017 ◽  
Vol 32 (04) ◽  
pp. 1750016 ◽  
Author(s):  
R. Azadifar ◽  
M. Mahdavi
Keyword(s):  
Inertial Confinement Fusion ◽  
Ion Beam ◽  
Deuteron Beam ◽  
Fast Ignition ◽  
Total Power ◽  
Fuel Pellet ◽  
Inertial Confinement ◽  
Fuel Surface ◽  
Power Deposition ◽  
Confinement Fusion

In ion fast ignition (FI) inertial confinement fusion (ICF), a laser accelerated ion beam called igniter provides energy required for ignition of a fuel pellet. The laser accelerated deuteron beam is considered as igniter. The deuteron beam with Maxwellian energy distribution produced at the distance d = 500 [Formula: see text]m, from fuel surface, travels during time t = 20 ps and arrives with power [Formula: see text] to the fuel surface. Then, the deuteron beam deposits its energy into fuel by Coulomb and nuclear interactions with background plasma particles during time t = 10 ps, with power [Formula: see text]. Since time and power of the two stages have same order, to calculate the total power deposited by igniter beam, both stages must be considered simultaneously. In this paper, the exact power of each stage has been calculated separately, and the total power [Formula: see text] has been obtained. The obtained results show that the total power deposition [Formula: see text] is significantly reduced due to reducing different temperature between projectile and target particles.

scholarly journals Ignition criteria for x-ray fast ignition inertial confinement fusion

2020 ◽  
Vol 27 (4) ◽  
pp. 042711
Author(s):  
J. G. Lee ◽  
A. P. L. Robinson ◽  
J. Pasley
Keyword(s):  
Inertial Confinement Fusion ◽  
Fast Ignition ◽  
Inertial Confinement ◽  
X Ray ◽  
Confinement Fusion
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