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首页> 外文期刊>Transactions of the Japan society for aeronautical and space sciences >Analysis of Laser Wavelength and Energy Dependences of the Impulse in a Magnetic Thrust Chamber System for a Laser Fusion Rocket
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Analysis of Laser Wavelength and Energy Dependences of the Impulse in a Magnetic Thrust Chamber System for a Laser Fusion Rocket

机译：激光聚变火箭弹磁推力腔系统中脉冲的激光波长和能量相关性分析

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摘要

Experiments using a pendulum thrust stand are performed to determine the dependences of the impulse on the laser wavelength and energy in a magnetic thrust chamber system for a laser fusion rocket. The impulse is generated by the interaction between a diamagnetic current in a laser-produced plasma and a magnetic field. The plasma is produced by irradiating a spherical polyacetal target with a single-beam glass laser (laser pulse duration: 1.3 ns; laser wavelengths: 1,053, 527 and 351 nm; laser energy: 30-900 J). The magnetic field is generated by a cylindrical neodymium permanent magnet (50 mm diameter and 40 mm long) placed in a position 33 mm from the target. Impulses in the range 0.02-10mNs are measured using a pendulum thrust stand. The experiments reveal that the impulse for 2ω is similar to that for 3ω, and is larger than that for ω.
机译：进行了使用摆式推力架的实验，以确定脉冲对激光聚变火箭的磁推力室系统中激光波长和能量的依赖性。脉冲是由激光产生的等离子体中的反磁性电流与磁场之间的相互作用产生的。通过用单光束玻璃激光（激光脉冲持续时间：1.3 ns；激光波长：1,053、527和351 nm；激光能量：30-900 J）照射球形聚缩醛靶来产生等离子体。磁场由放置在距靶材33 mm处的圆柱形钕永磁体（直径50 mm，长40 mm）产生。使用摆式推力架测量0.02-10mNs范围内的脉冲。实验表明，2ω的脉冲与3ω的脉冲相似，并且大于ω的脉冲。

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