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首页> 外文会议>Conference on High-Power Laser Ablation >Polymers as Fuel for Laser Plasma Thrusters A correlation of thrust with material and plasma properties by mass spectrometry
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Polymers as Fuel for Laser Plasma Thrusters A correlation of thrust with material and plasma properties by mass spectrometry

机译：聚合物作为激光等离子体的燃料推动通过质谱法通过质谱法与材料和等离子体特性的相关性的相关性

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The micro laser plasma thruster (μLPT) is a micro propulsion device, designed for the steering and propelling of small satellites (1 to 10 kg). A laser is focused onto a polymer layer on a substrate to form a plasma. The thrust produced by this plasma is used to control the satellite motion. To understand the influence of the specific properties of the polymers, three different "high"- and "low"-energetic polymers were tested: poly(vinyl chloride) (PVC) as a low-energetic reference polymer that showed the best properties among commercial polymers, a glycidyl azide polymer (GAP), and poly(vinyl nitrate) (PVN) as high-energetic polymers. It was necessary to dope the polymers with carbon nanoparticles or an IR-dye to achieve absorption at the irradiation wavelength in the near IR. Decomposition into smaller fragmentation was measured for the energetic polymers than for PVC corresponding well to the higher momentum coupling coefficient of the energetic polymers, which indicates that more thrust can be gained from a chosen incident laser power. The measurements of the kinetic energies of selected decomposition fragments revealed no significant difference between the different carbon doped polymers. Only for GAP with the IR-dye a change in the ratio between ions with different kinetic energy was observed with increasing fluence. More C~+ ions with higher kinetic energy were detected at higher fluences. No correlation between the kinetic energies of the ablation products and the specific impulse could be established for the obtained data.
机译：微激光等离子体推进器（μlPT）是微型推进装置，专为小卫星的转向和推进而设计（1至10kg）。激光聚焦在基材上的聚合物层上以形成血浆。通过该等离子体产生的推力用于控制卫星运动。为了理解聚合物的特定性质的影响，测试了三种不同的“高” - 和“低” - 终体聚合物：聚（氯乙烯）（PVC）作为低能量参考聚合物，其在商业中显示出最佳性质聚合物，丙啶氧化乙酰亚胺聚合物（间隙）和聚（硝酸乙烯酯）（PVN）作为高能聚合物。有必要将具有碳纳米颗粒的聚合物或IR-染料掺杂，以在接近IR中的照射波长处达到吸收。对高能聚合物测量的分解成较小的碎片，比对高能量聚合物的较高动量耦合系数的PVC测量，这表明可以从所选择的入射激光功率获得更多推力。所选分解片段的动力学能量的测量显示不同的碳掺杂聚合物之间没有显着差异。仅针对IR-DYE的间隙仅针对含有不同动能的离子之间的比例的变化，随着量劲的增加而观察到不同的动能。在较高的流量升高时检测到具有更高动能的C〜+离子。对于获得的数据，可以建立消融产品的动力学能量与特定脉冲之间的相关性。

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