Diffusion filling with fuel gas of high-gain direct-drive cryogenic targets

To provide continuous operation of a reactor based on inertial confinement fusion (ICF), the thermonuclear burn region should be refilled with fuel with a frequency of 1 million targets per day. The first stage in the target production is diffusion filling of polymeric (CH) shells with fuel gas whic...

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Bibliographic Details
Published in:Bulletin of the Lebedev Physics Institute 2017-12, Vol.44 (12), p.357-364
Main Authors: Aleksandrova, I. V., Koresheva, E. R., Koshelev, E. L.
Format: Article
Language:English
Subjects:
Beta decay
Deuterium
Diffusion rate
Inertial confinement fusion
Nuclear fuels
Physics
Physics and Astronomy
Tritium
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Summary:To provide continuous operation of a reactor based on inertial confinement fusion (ICF), the thermonuclear burn region should be refilled with fuel with a frequency of 1 million targets per day. The first stage in the target production is diffusion filling of polymeric (CH) shells with fuel gas which is deuterium (D 2 ) or deuterium–tritium (DT) mixture. The results of simulation of filling reactor-scale CH-shells (Ø ~ 4 mm) to a pressure of ~1100 atm at 300 K in the mode with a constant pressure gradient are presented. Simple and two-layer shells of compact and porous polymers are considered. The problems of constructing an optimum DT-filling scheme avoiding CH-shell fracture due to tritium beta decay are discussed.
ISSN:1068-3356
1934-838X
DOI:10.3103/S1068335617120041