Measurements of Rayleigh-Taylor Growth Rate of Planar Targets Irradiated Directly by Partially Coherent Light

Shigemori, K.; Azechi, H.; Nakai, M.; Honda, M.; Meguro, Kanji; Miyanaga, Noriaki; Takabe, H.; Mima, Kunioki

doi:10.1103/physrevlett.78.250

Cited by 116 publications

(73 citation statements)

References 25 publications

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“…RTI also plays a significant role in astrophysics 9,10 and inertial confinement fusion (ICF). [11][12][13][14][15][16][17][18][19][20][21][22][23] RTI happens on an interface separating two different fluids when a light fluid supports a heavy fluid in a gravity field or accelerates it.…”

Section: Rayleigh-taylor Instability (Rti)mentioning

confidence: 99%

Harmonic growth of spherical Rayleigh-Taylor instability in weakly nonlinear regime

Liu

Chen²,

et al. 2015

Physics of Plasmas

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Harmonic growth in classical Rayleigh-Taylor instability (RTI) on a spherical interface is analytically investigated using the method of the parameter expansion up to the third order. Our results show that the amplitudes of the first four harmonics will recover those in planar RTI as the interface radius tends to infinity compared against the initial perturbation wavelength. The initial radius dramatically influences the harmonic development. The appearance of the second-order feedback to the initial unperturbed interface (i.e., the zeroth harmonic) makes the interface move towards the spherical center. For these four harmonics, the smaller the initial radius is, the faster they grow. V C 2015 AIP Publishing LLC.

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Section: Rayleigh-taylor Instability (Rti)mentioning

confidence: 99%

Harmonic growth of spherical Rayleigh-Taylor instability in weakly nonlinear regime

Liu

Chen²,

et al. 2015

Physics of Plasmas

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“…Initially, the compression phase could be described by a weakly oscillating RM instability [9,10], while the RTI in the acceleration phase could grow exponentially as the experiment progresses [11][12][13]. RTI can be amplified by the non-uniformity of laser and the RMI [14].…”

Section: Introductionmentioning

confidence: 98%

Density Gradient Effect on the Non-Linear Spectrum of the Rayleigh–Taylor Instability

2015

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Nonlinear spectrum of the deceleration phase Rayleigh-Taylor instability (RTI) has been investigated in the inertial confinement fusion. Growth rate of the deceleration phase RTI has been expressed well in the form ofwhere a and b are constants. g, k, L m and u a are the target acceleration, the wave number, the finite density gradient scale length and the ablation velocity, respectively (Betti et al. in Phys Plasmas 5:1446. Analytically obtained results indicate that the mass power spectrum can be described as an inverse power law with an approximate spectral index of 2.3 in the limit of kL 0 ( 1, where k is the wave number and L 0 is the ablation front thickness and we have shown that power-law slope for kL m ) 1 is the most that it is changing with k -4 . Furthermore, it has been found that nonlinear power spectrum decreases slowly by increasing of the hot spot radius. Our obtained value is in agreement with theoretical findings (Keskinen et al. in Phys. Plasmas 14:012705, 2007).

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“…An accurate description of this process is necessary for the understanding of laser-matter interactions and for target design. Numerous physical phenomena such as, parametric [36,67] and hydrodynamic [32,74,81] instabilities, laser-plasma absorption [73], wave damping [57], energy redistribution [70] inside the plasma and hot spots formation [12,65] from which the thermonuclear reactions propagate depend on the electron heat transport. The most popular electron heat transport theory was developed by Spitzer and Härm [76] who first solved the electron kinetic equation by using the expansion of the electron mean free path to the temperature scale length (denoted ε in this paper).…”

Section: Introductionmentioning

confidence: 99%

Asymptotic-preserving well-balanced scheme for the electronic M₁ model in the diffusive limit: Particular cases

et al. 2017

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Abstract. This work is devoted to the derivation of an asymptotic-preserving scheme for the electronic M1 model in the diffusive regime. The case without electric field and the homogeneous case are studied. The derivation of the scheme is based on an approximate Riemann solver where the intermediate states are chosen consistent with the integral form of the approximate Riemann solver. This choice can be modified to enable the derivation of a numerical scheme which also satisfies the admissible conditions and is well-suited for capturing steady states. Moreover, it enjoys asymptotic-preserving properties and handles the diffusive limit recovering the correct diffusion equation. Numerical tests cases are presented, in each case, the asymptotic-preserving scheme is compared to the classical HLL [A. Harten, P.D. Lax and B. Van Leer, SIAM Rev. 25 (1983) 35-61.] scheme usually used for the electronic M1 model. It is shown that the new scheme gives comparable results with respect to the HLL scheme in the classical regime. On the contrary, in the diffusive regime, the asymptotic-preserving scheme coincides with the expected diffusion equation, while the HLL scheme suffers from a severe lack of accuracy because of its unphysical numerical viscosity.Mathematics Subject Classification. 65C20, 65M12.

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Measurements of Rayleigh-Taylor Growth Rate of Planar Targets Irradiated Directly by Partially Coherent Light

Cited by 116 publications

References 25 publications

Harmonic growth of spherical Rayleigh-Taylor instability in weakly nonlinear regime

Harmonic growth of spherical Rayleigh-Taylor instability in weakly nonlinear regime

Density Gradient Effect on the Non-Linear Spectrum of the Rayleigh–Taylor Instability

Asymptotic-preserving well-balanced scheme for the electronic M₁ model in the diffusive limit: Particular cases

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Measurements of Rayleigh-Taylor Growth Rate of Planar Targets Irradiated Directly by Partially Coherent Light

Cited by 116 publications

References 25 publications

Harmonic growth of spherical Rayleigh-Taylor instability in weakly nonlinear regime

Harmonic growth of spherical Rayleigh-Taylor instability in weakly nonlinear regime

Density Gradient Effect on the Non-Linear Spectrum of the Rayleigh–Taylor Instability

Asymptotic-preserving well-balanced scheme for the electronic M1 model in the diffusive limit: Particular cases

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Product

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Asymptotic-preserving well-balanced scheme for the electronic M₁ model in the diffusive limit: Particular cases