Abstract
The momentum transfer and the specific impulse of the ablative laser propulsion of nanosecond laser irradiation on copper, lead, aluminum and graphite targets are investigated. The effects of the ambient pressure and laser focal spot sizes on the target momentum are measured. The results show that the target momentum strongly relates to the ambient pressure and target property. The highest target momentum about 2.28 g·cm/s is obtained on lead targets under 1 atmospheric pressure. With the increase of the focal spot sizes, the specific impulse decreases. The highest specific impulse in vacuum is about 950 s on copper targets.
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52.75.Di; 52.38.Mf; 52.50.Jm
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Zheng, Z., Zhang, J., Lu, X. et al. Characteristic investigation of ablative laser propulsion driven by nanosecond laser pulses. Appl. Phys. A 83, 329–332 (2006). https://doi.org/10.1007/s00339-006-3498-z
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DOI: https://doi.org/10.1007/s00339-006-3498-z