An investigation progress toward Be-based ablator materials for the inertial confinement fusion

Abstract

The Be-based materials with many particular properties lead to an important research subject. The investigation progresses in the fabrication technologies are introduced here, including main three kinds of Be-based materials, such as Be-Cu capsule, Be 2 C ablator and high-purity Be material. Compared with the pioneer workgroup on Be-based materials, the differences in Be-Cu target fabrication were described, and a grain refinement technique by an active hydrogen reaction for Be coating was proposed uniquely. Be 2 C coatings were first prepared by the DC reactive magnetron sputtering with a high deposition rate (∼300 nm/h). Pure polycrystalline Be 2 C films with uniform microstructures, smooth surface, high density (∼2.2 g · cm 3 ) and good optical transparency were fabricated. In addition, the high-purity Be materials with metal impurities in a ppm magnitude were fabricated by the pyrolysis of organometallic Be.

Review of HPLSE special issue on target fabrication

“…A new spatial angle assembly method of the ICF target [3] 6. An investigation progress toward Be-based ablator materials for the inertial confinement fusion [4] 7. Review on high repetition rate and mass production of the cryogenic targets for laser IFE [5] 8. An automated, 0.5 Hz nano-foil target positioning system for intense laser plasma experiments [11] 9.…”

“…Submissions for the special issue covered the invited topics and also branched out into broader areas and capabilities. Papers described research on: techniques for the production of targets for inertial confinement fusion (ICF) [1][2][3][4][5][6][7][8] , micro-assembly [3,8,9] , liquid targets [10] , systems for delivery of targets at high repetition rates [5,11,12] , fundamental target fabrication processes [2,4,[13][14][15][16] , low density materials [15,17,18] and metrology methods [7,18,19] . In addition, there were three important review papers [1,5,12] that give an excellent snapshot of the current capabilities across the world.…”

“…The assembly of targets using precision multi-axis manipulators [3, 8] ; and the relevance of this assembly process to other target micro-assembly processes are published. Papers on ablator materials including different beryllium copper/carbon compound mixes [4] and the fundamental physical properties of the films and coatings were published. Characterization of shells using atomic force microscope (AFM) techniques [7] and hohlraum manufacture and leak characterization papers [6] were published.…”

“…A large number of papers cover fundamental techniques in target manufacture including fill-tube design [2] , ultra-thin foils of plastic [13] , graphene [16] and microstructures on silicon for ion sources [14] . Other research published includes beryllium-based ablator materials [4] , low density aerogels, foams, and assemblies (using low density materials) for radiation transport experiments [15] .…”

“…Special issue content Development of target fabrication for laser-driven inertial confinement fusion at research center of laser fusion [1] Permeation fill-tube design for inertial confinement fusion target capsules [2] Fluid sample injectors for X-ray free electron laser at SACLA [10] Efficient offline production of freestanding thin plastic foils for laser-driven ion sources [13] A new spatial angle assembly method of the ICF target [3] An investigation progress toward Be-based ablator materials for the inertial confinement fusion [4] Review on high repetition rate and mass production of the cryogenic targets for laser IFE [5] An automated, 0.5 Hz nano-foil target positioning system for intense laser plasma experiments [11] Laser-induced microstructures on silicon for laser-driven acceleration experiments [14] Developing targets for radiation transport experiments at the Omega laser facility [15] Targets for high repetition rate laser facilities: needs, challenges and perspectives [12] Large-area suspended graphene as a laser target to produce an energetic ion beam [16] Importance of limiting hohlraum leaks at cryogenic temperatures on NIF targets [6] Surface characterization of ICF capsule by AFM-based profilometer [7] Design and fabrication of gas cell targets for laboratory astrophysics experiments on the Orion high-power laser facility [9] REACH compliant epoxides used in the synthesis of Fe(III)-based aerogel monoliths for target fabrication [17] Assembly and metrology of NIF target subassemblies using robotic systems [8] Modeling the mechanical properties of ultra-thin polymer films [19] X-ray computed tomography of adhesive wicking into carbon foam [18] …”