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


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Abstract

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 (D2) 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.

About the authors

I. V. Aleksandrova

Lebedev Physical Institute

Author for correspondence.
Email: ivaaleks@gmail.com
Russian Federation, Leninskii pr. 53, Moscow, 119991

E. R. Koresheva

Lebedev Physical Institute; National Research Nuclear University “MEPhI”

Email: ivaaleks@gmail.com
Russian Federation, Leninskii pr. 53, Moscow, 119991; Kashirskoe sh. 31, Moscow, 115409

E. L. Koshelev

Lebedev Physical Institute

Email: ivaaleks@gmail.com
Russian Federation, Leninskii pr. 53, Moscow, 119991

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