Inertial fusion research in China

Xie, He; Zhang, W. Y.

doi:10.1140/epjd/e2007-00005-1

Cited by 91 publications

(39 citation statements)

References 5 publications

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“…Next (He & Zhang 2007). A 4-beam, 9 kJ in 0.351 mm glass laser system Luch is under construction at VNIIEF, Russia (one of its beams has been operational since 2002, see Garanin et al 2005) as a prototype of the 128-beam, 300 kJ Iskra-6 facility.…”

Section: Laser Drivers and Diagnosticsmentioning

confidence: 99%

Basic hydrodynamics of Richtmyer–Meshkov-type growth and oscillations in the inertial confinement fusion-relevant conditions

Aglitskiy

Velikovich

Karasik

et al. 2010

Phil. Trans. R. Soc. A.

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In inertial confinement fusion (ICF), the possibility of ignition or high energy gain is largely determined by our ability to control the Rayleigh-Taylor (RT) instability growth in the target. The exponentially amplified RT perturbation eigenmodes are formed from all sources of the target and radiation non-uniformity in a process called seeding. This process involves a variety of physical mechanisms that are somewhat similar to the classical Richtmyer-Meshkov (RM) instability (in particular, most of them are active in the absence of acceleration), but differ from it in many ways. In the last decade, radiographic diagnostic techniques have been developed that made direct observations of the RM-type effects in the ICF-relevant conditions possible. New experiments stimulated the advancement of the theory of the RM-type processes. The progress in the experimental and theoretical studies of such phenomena as ablative RM instability, re-shock of the RM-unstable interface, feedout and perturbation development associated with impulsive loading is reviewed.

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Section: Laser Drivers and Diagnosticsmentioning

confidence: 99%

Basic hydrodynamics of Richtmyer–Meshkov-type growth and oscillations in the inertial confinement fusion-relevant conditions

Aglitskiy

Velikovich

Karasik

et al. 2010

Phil. Trans. R. Soc. A.

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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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“…The previous approaches for laser driver operation could not meet the new requirements, and the environment contamination in laser facilities may degrade the optics damage threshold and so limit further development of the laser drivers. Today, Shenguang-III (SG-III) laser facility, which is composed of 48 square laser beams (400 mm × 400 mm), is under construction, and it can output hundreds of thousands of joules of the UV laser pulse per nanosecond [1]. Owing to the enlightenment of the construction of the National Ignition Facility (NIF) in the United States, the contamination control of the SG-III laser facility has been unprecedentedly considered during construction because of the laser-induced damage with contamination located on the optic surface.…”

Section: Introductionmentioning

confidence: 99%

Surface Contaminant Control Technologies to Improve Laser Damage Resistance of Optics

Cheng

Miao

Wang

et al. 2014

Advances in Condensed Matter Physics

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The large high-power solid lasers, such as the National Ignition Facility (NIF) of America and the Shenguang-III (SG-III) laser facility of China, can output over 2.1 MJ laser pulse for the inertial confinement fusion (ICF) experiments. Because of the enhancement of operating flux and the expansion of laser driver scale, the problem of contamination seriously influences their construction period and operation life. During irradiation by intense laser beams, the contaminants on the metallic surface of beam tubes can be transmitted to the optical surfaces and lead to damage of optical components. For the high-power solid-state laser facilities, contamination control focuses on the slab amplifiers, spatial filters, and final-optical assemblies. In this paper, an effective solution to control contaminations including the whole process of the laser driver is put forward to provide the safe operation of laser facilities, and the detailed technical methods of contamination control such as washing, cleanliness metrology, and cleanliness protecting are also introduced to reduce the probability of laser-induced damage of optics. The experimental results show that the cleanliness level of SG-III laser facility is much better to ensure that the laser facility can safely operate at high energy flux.

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Inertial fusion research in China

Cited by 91 publications

References 5 publications

Basic hydrodynamics of Richtmyer–Meshkov-type growth and oscillations in the inertial confinement fusion-relevant conditions

Basic hydrodynamics of Richtmyer–Meshkov-type growth and oscillations in the inertial confinement fusion-relevant conditions

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

Surface Contaminant Control Technologies to Improve Laser Damage Resistance of Optics

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