Development of foam shell with plastic ablator for cryogenic laser fusion target

Takagi, Masaru; Ishihara, Masahiro; Norimatsu, T.; Yamanaka, Tatsuhiko; Izawa, Y.; Nakai, S.

doi:10.1116/1.578649

Cited by 43 publications

(18 citation statements)

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“…The cross-linked acrylic polymer made by this technique exhibited a fine structure of $200 nm. 58,59 Borisenko et al reported a polymer derived density gradient polyacrylate foam in a one-step interfacial polymerization process. 60,61 The components of that density gradient foam are 1,2-dichloromethane as the solvent, SnCl 2 as the initiator, and divinylbenzene as the monomer.…”

Section: A Polyacrylatementioning

confidence: 99%

“…119 Emulsion processes can be optimized in order to adjust the sphericity and other important parameters for capsule production. 58,[114][115][116][120][121][122] A new approach was shown by Biener et al as a coating inside the prefabricated spherical ablator capsule. 92 The aerogel precursor solution was P(DCPD-r-NB) as described in Sec.…”

Section: Shell Structure Of Low Density Materialsmentioning

confidence: 99%

“…Poly(4-vinylphenol) has been used as a coating layer by adding a phase transfer crosslinker of m-phthaloyldichloride. 58,59,131 The coating layer in this application was necessary to act as a gas barrier for foam-coated cryogenic targets. In order to produce such a barrier for RF aerogels, phase-transfer catalysis polymerization was used simultaneously during the gelation process.…”

Section: F Membrane On the Porous Materialsmentioning

confidence: 99%

“…An emulsion process is used for the production of these shells. 58 Viscosity control is crucial to controlling the thinness of the walls of these shells, 114 density matching method also plays an important part to achieve these high specifications. 115,116 In order to keep such a density matching and temperature independent reaction process, the phase transfer catalyst is a useful method.…”

Section: Shell Structure Of Low Density Materialsmentioning

confidence: 99%

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A review of low density porous materials used in laser plasma experiments

2018

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This review describes and categorizes the synthesis and properties of low density porous materials, which are commonly referred to as foams and are utilized for laser plasma experiments. By focusing a high-power laser on a small target composed of these materials, high energy and density states can be produced. In the past decade or so, various new target fabrication techniques have been developed by many laboratories that use high energy lasers and consequently, many publications and reviews followed these developments. However, the emphasis so far has been on targets that did not utilize low density porous materials. This review therefore, attempts to redress this balance and endeavors to review low density materials used in laser plasma experiments in recent years. The emphasis of this review will be on aspects of low density materials that are of relevance to high energy laser plasma experiments. Aspects of low density materials such as densities, elemental compositions, macroscopic structures, nanostructures, and characterization of these materials will be covered. Also, there will be a brief mention of how these aspects affect the results in laser plasma experiments and the constrictions that these requirements put on the fabrication of low density materials relevant to this field. This review is written from the chemists' point of view to aid physicists and the new comers to this field.

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Section: A Polyacrylatementioning

confidence: 99%

Section: Shell Structure Of Low Density Materialsmentioning

confidence: 99%

Section: F Membrane On the Porous Materialsmentioning

confidence: 99%

Section: Shell Structure Of Low Density Materialsmentioning

confidence: 99%

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A review of low density porous materials used in laser plasma experiments

2018

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“…For spherical targets, emulsion processes can be used [105,106] : viscosity is the crucial parameter to control the wall thickness [107] . Interfacial polymerization allows production of foams with a smooth membrane on the surface [108] .…”

Section: Other Target Typesmentioning

confidence: 99%

Targets for high repetition rate laser facilities: needs, challenges and perspectives

Prencipe

Fuchs

Pascarelli

et al. 2017

High Pow Laser Sci Eng

127

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2 I. Prencipe et al.Abstract A number of laser facilities coming online all over the world promise the capability of high-power laser experiments with shot repetition rates between 1 and 10 Hz. Target availability and technical issues related to the interaction environment could become a bottleneck for the exploitation of such facilities. In this paper, we report on target needs for three different classes of experiments: dynamic compression physics, electron transport and isochoric heating, and laser-driven particle and radiation sources. We also review some of the most challenging issues in target fabrication and high repetition rate operation. Finally, we discuss current target supply strategies and future perspectives to establish a sustainable target provision infrastructure for advanced laser facilities.

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Preparation of ultra‐low‐density microcellular materials

Richez

Deleuze

Vedrenne

et al. 2005

J of Applied Polymer Sci

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Microcellular polymeric materials can be obtained by the polymerization of a high-internal-phase emulsion. These materials are good candidates as targets toward inertial confinement fusion. This application requires severe specifications, including a very low density and a small cell size. In this study, we examined the influence of parameters such as emulsification conditions, surfactant nature, and the presence of a porogen on the obtainment of those requirements. It was possible to obtain microcellular polymeric foams with apparent densities as low as 0.0126 g/cm 3 . However, it was difficult to obtain very low material density and still maintain a small average pore size.

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Development of foam shell with plastic ablator for cryogenic laser fusion target

Cited by 43 publications

References 0 publications

A review of low density porous materials used in laser plasma experiments

A review of low density porous materials used in laser plasma experiments

Targets for high repetition rate laser facilities: needs, challenges and perspectives

Preparation of ultra‐low‐density microcellular materials

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