ICF平面低温冷冻靶系统的初步设计及应用
Design and application of a new planar cryotarget system for ICF
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摘要: 利用Gifford-McMahon（G-M）制冷机提供低温源，研制了平面低温冷冻靶系统。该系统最低温度可以达到10 K，制冷功率随温度降低而降低，制冷速率可控。其中，在18.6 K其制冷功率可以达到6.5 W；在14 K其制冷功率为3 W。利用该系统，初步开展了氩、氢的冷冻实验，并研究了温度对激光惯性约束聚变靶丸结构的影响。获得了氩、氢平面低温冷冻靶，并观察到了低温诱导聚变靶丸形变现象。
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关键词:
- 惯性约束聚变 /
- 冷冻靶 /
- G-制冷机 /
- Mach-Zehnder干涉法
Abstract: A planar cryotarget system for the inertial-confinement-fusion(ICF) experiments was set up with the low-temperature resource provided by a Gifford-McMahon cryocooler. The cooling power and the cooling rate of the planar cryotarget system were examined as functions of temperature. This system can reach a lowest temperature of 10 K, and its cooling powers are 3 W at 14 K and 6.5 W at 18.6 K. The cooling rate can be artificially adjusted. Using this system, the argon and hydrogen vapors at 300 K are condensed to liquid or solid in a cylindrical target cell. With the help of Mach-Zehnder interference, the planar cryotarget system is also applied to reveal that the ICF capsules are structurally deformed with decreasing the temperatures．-
Key words:
- icf /
- cryotarget /
- gifford-cmahon cryocooler /
- mach-zehnder interference
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