AI 中文总结
研究针对太空激光功率传输中半导体光伏接收器的问题，提出气相等离子体功率电池，利用氙光电离和磁偏压电荷分离，经粒子模拟，在特定条件下转换效率达82.25%，确定相关控制因素，是空间激光功率传输概念验证的气相接收器架构。
AI 中文摘要
激光能量传输为太空能源输送提供了一条途径，但半导体激光光伏接收器面临热化、焦耳热和辐射复合损耗等问题。在此，我们提出一种气相等离子体功率电池，其通过氙光电离和磁偏压电荷分离将真空紫外光子转换为电输出。对由58.4nm脉冲激光驱动的低压氙气室进行的粒子模拟预测，在平均入射功率为2000W/m²时，稳态激光到电的转换效率为82.25%。能量核算接近1%，光子逃逸率为7.52%，边界损失率为8.95%，腔室储能率为1.29%。对偏置电压、磁场和气压的参数扫描确定了光子吸收和电子限制是控制设计的因素。这些结果是用于空间激光功率传输的概念验证气相接收器架构。
英文摘要
Laser power beaming offers a route to space energy delivery, but semiconductor laser photovoltaic receivers face thermalization, joule heat, and radiative recombination waste, etc. Here we propose a gas-phase plasma power cell that converts vacuum-ultraviolet photons into electrical output through xenon photoionization and magnetically biased charge separation. Particle-in-cell Monte Carlo simulations of a low-pressure xenon chamber driven by a 58.4 nm pulsed laser predict a steady-state laser-to-electrical conversion efficiency of 82.25% at 2000 W/m2 average incident power. Energy accounting closes to 1%, with 7.52% photon escape, 8.95% boundary loss, and 1.29% chamber-stored energy. Parameter scans over bias voltage, magnetic field, and gas pressure identify photon absorption and electron confinement as controlling design factors. These results are a proof-of-concept gas-phase receiver architecture for space laser power beaming.
CommentsMain article 15 pages, supporting information 14 pages
