Abstract
This report describes a possible design of a fast, high-temperature, arc-driven hydrogen gas source module, to be used in a scheme for multi-stage high-speed pneumatic acceleration of fusion plasma fuel pellets. The potential of this
scheme for operating with a moderate driving pressure at long acceleration path lengths is particular attractive for accelerating fragile hydrogen isotope ice pellets. From experiments with an ethanol-based arc unit, design parameters for
a propeller module were assessed, and with a barrel-mounted ethanol module staged pneumatic acceleration of a plastic dummy pellet was demonstrated. In experiments with a hydrogenbased, cryogenic arc unit in which 200 joules of
electrical energy were dissipated with a power level approaching S MW within 30 (is, the velocity of a 23-mg plastic pellet was increased from 1.7 to 2.4 km/s. Results in terms of barrel pressure transients and arc characteristics are described.
scheme for operating with a moderate driving pressure at long acceleration path lengths is particular attractive for accelerating fragile hydrogen isotope ice pellets. From experiments with an ethanol-based arc unit, design parameters for
a propeller module were assessed, and with a barrel-mounted ethanol module staged pneumatic acceleration of a plastic dummy pellet was demonstrated. In experiments with a hydrogenbased, cryogenic arc unit in which 200 joules of
electrical energy were dissipated with a power level approaching S MW within 30 (is, the velocity of a 23-mg plastic pellet was increased from 1.7 to 2.4 km/s. Results in terms of barrel pressure transients and arc characteristics are described.
| Original language | English |
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| Place of Publication | Roskilde |
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| Publisher | Risø National Laboratory |
| Number of pages | 36 |
| ISBN (Print) | 87-550-1623-5 |
| Publication status | Published - 1990 |
| Series | Risø-M |
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| Number | 2857 |
| ISSN | 0418-6435 |
Keywords
- Risø-M-2857