Repeating pneumatic hydrogen pellet injector for plasma fueling
Repeating pneumatic hydrogen pellet injector for plasma fueling
复制标题
用于等离子燃料的重复气动氢颗粒注射器
DOI：
10.1063/1.1138025
复制
发表时间：
1985
影响因子：
1.6
通讯作者：
D. Schuresko
中科院分区：
文献类型：
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作者：
S. Combs;S. Milora;C. Foust;C. A. Foster;D. Schuresko
重复气动弹丸注入器已开发用于等离子体燃料的应用。重复装置将气动注射器操作扩展到稳定状态。主动机构由一个挤压机和一个枪组件组成，它们由流动的液氦制冷剂冷却。挤压机向枪组件提供连续的固体氢供应，在枪组件中，往复运动的枪管从挤压中形成圆柱形弹丸;然后用压缩氢气（压力高达125 bar）将弹丸加速到≤1.9 km/s（氘弹丸为1.6 km/s）。枪组件设计可以适应不同的弹丸尺寸和枪管长度。使用直径为2.1 mm、3.4 mm和4.0 mm的小球获得了2 s−1的稳态速率。本装置在短时间内以较高的发射率工作;例如，对于较大的弹丸，6 s-1的发射率持续2 s。这些芯块参数在适用于为当今大型聚变装置（如To...
A repeating pneumatic pellet injector has been developed for plasma fueling applications. The repetitive device extends pneumatic injector operation to steady state. The active mechanism consists of an extruder and a gun assembly that are cooled by flowing liquid‐helium refrigerant. The extruder provides a continuous supply of solid hydrogen to the gun assembly, where a reciprocating gun barrel forms and chambers cylindrical pellet from the extrusion; pellets are then accelerated with compressed hydrogen gas (pressures up to 125 bar) to velocities ≤1.9 km/s (1.6 km/s for deuterium pellets). The gun assembly design can accommodate different pellet sizes and barrel lengths. Steady‐state rates of 2 s−1 have been obtained with 2.1‐ , 3.4‐ , and 4.0‐mm‐diameter pellets. The present apparatus operates at higher firing rates in short bursts; for example, a rate of 6 s−1 for 2 s with the larger pellets. These pellet parameters are in the range applicable for fueling large present‐day fusion devices such as the To...