skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A novel technique to make foam shells with high sphericity and wall uniformity for cryogenic laser fusion targets

Abstract

A new technique to make low-density, low-atomic-number foam shells was developed for use in cryogenic laser fusion targets. Shells with sphericity {gt} 99% and wall uniformity {gt} 97% were fabricated by a density matched emulsion method using cross-linked copolymerization in the oil phase of the emulsion. The diameter, wall thickness and density of the shells ranged in 100--1500 {mu}m, 10--150 {mu}m, and 90--310 mg/cm{sup 3}, respectively. Some foam shells exhibited a membrane on the outer surface, which could be used as the protective layer to prevent liquid fuel from boiling off. The foam shell was transparent when it was saturated with liquid deuterium. This enables us to characterize distribution of the liquid fuel in the shell using an optical interference technique.

Authors:
; ; ;  [1];  [2]
  1. Institute of Laser Engineering, Osaka University, 2-6, Yamada-oka, Suita, Osaka 565, Japan (JP)
  2. Nihon Sanso Corporation, 4-230, Tsukagoshi, Saiwaiku, Kawasaki 210, Japan (JP)
Publication Date:
OSTI Identifier:
5650926
Resource Type:
Journal Article
Journal Name:
Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (USA)
Additional Journal Information:
Journal Volume: 9:3; Journal ID: ISSN 0734-2101
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; LASER TARGETS; FABRICATION; CRYOGENICS; DEUTERIUM; EMULSIONS; FOAMS; LASER FUSION REACTORS; LIQUIDS; POLYMERIZATION; SHELLS; SPHERICAL CONFIGURATION; CHEMICAL REACTIONS; COLLOIDS; CONFIGURATION; DISPERSIONS; FLUIDS; HYDROGEN ISOTOPES; ISOTOPES; LIGHT NUCLEI; NUCLEI; ODD-ODD NUCLEI; STABLE ISOTOPES; TARGETS; THERMONUCLEAR REACTORS; 700208* - Fusion Power Plant Technology- Inertial Confinement Technology

Citation Formats

Takagi, M, Norimatsu, T, Yamanaka, T, Nakai, S, and Ito, H. A novel technique to make foam shells with high sphericity and wall uniformity for cryogenic laser fusion targets. United States: N. p., 1991. Web. doi:10.1116/1.577322.
Takagi, M, Norimatsu, T, Yamanaka, T, Nakai, S, & Ito, H. A novel technique to make foam shells with high sphericity and wall uniformity for cryogenic laser fusion targets. United States. https://doi.org/10.1116/1.577322
Takagi, M, Norimatsu, T, Yamanaka, T, Nakai, S, and Ito, H. Wed . "A novel technique to make foam shells with high sphericity and wall uniformity for cryogenic laser fusion targets". United States. https://doi.org/10.1116/1.577322.
@article{osti_5650926,
title = {A novel technique to make foam shells with high sphericity and wall uniformity for cryogenic laser fusion targets},
author = {Takagi, M and Norimatsu, T and Yamanaka, T and Nakai, S and Ito, H},
abstractNote = {A new technique to make low-density, low-atomic-number foam shells was developed for use in cryogenic laser fusion targets. Shells with sphericity {gt} 99% and wall uniformity {gt} 97% were fabricated by a density matched emulsion method using cross-linked copolymerization in the oil phase of the emulsion. The diameter, wall thickness and density of the shells ranged in 100--1500 {mu}m, 10--150 {mu}m, and 90--310 mg/cm{sup 3}, respectively. Some foam shells exhibited a membrane on the outer surface, which could be used as the protective layer to prevent liquid fuel from boiling off. The foam shell was transparent when it was saturated with liquid deuterium. This enables us to characterize distribution of the liquid fuel in the shell using an optical interference technique.},
doi = {10.1116/1.577322},
url = {https://www.osti.gov/biblio/5650926}, journal = {Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (USA)},
issn = {0734-2101},
number = ,
volume = 9:3,
place = {United States},
year = {1991},
month = {5}
}