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Zenodo
2005
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| Online Access: | https://doi.org/10.2514/1.5493 |
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| _version_ | 1866901620810317824 |
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| author | Romero-Sanz, I. Aguirre de Carcer, I. Fernández de la Mora, J. |
| author_facet | Romero-Sanz, I. Aguirre de Carcer, I. Fernández de la Mora, J. |
| contents | <p>Electrical propulsion characteristics of emissions from heated Taylor cones in vacuo are investigated for the ionic liquid 1-ethyl-3-methylimidazoliumbis(perfluoroethylsulfonyl)imide. Low specific impulses are encounteredat room temperature. However, the drop size decreases and the ion currents become very large at increasing temperatures, leading above 119°C to the appearance of a purely ionic regime with currents in excess of 4 μA. This mode of operation leads to thrusts approaching 1 μN per Taylor cone, at a specific impulse above 2000 s. The ion beam is dominated by the dimer ion (∼80%), with a mass-over-charge ratio larger than 600 amu, substantially larger than possible with traditional ion sources. The purely ionic regime had been previously observed in roomtemperature 1-ethyl-3-methylimidazolium + -BF 4 , but this is the first report where this regime exists over a wide range of currents. The levels of both thrust and specific impulse reported are considerably higher than those previously attained from single Taylor cones of organic electrolytes. </p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_2514_1_5493 |
| institution | Zenodo |
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| publishDate | 2005 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Ionic Propulsion Based on Heated Taylor Cones of Ionic Liquids Romero-Sanz, I. Aguirre de Carcer, I. Fernández de la Mora, J. <p>Electrical propulsion characteristics of emissions from heated Taylor cones in vacuo are investigated for the ionic liquid 1-ethyl-3-methylimidazoliumbis(perfluoroethylsulfonyl)imide. Low specific impulses are encounteredat room temperature. However, the drop size decreases and the ion currents become very large at increasing temperatures, leading above 119°C to the appearance of a purely ionic regime with currents in excess of 4 μA. This mode of operation leads to thrusts approaching 1 μN per Taylor cone, at a specific impulse above 2000 s. The ion beam is dominated by the dimer ion (∼80%), with a mass-over-charge ratio larger than 600 amu, substantially larger than possible with traditional ion sources. The purely ionic regime had been previously observed in roomtemperature 1-ethyl-3-methylimidazolium + -BF 4 , but this is the first report where this regime exists over a wide range of currents. The levels of both thrust and specific impulse reported are considerably higher than those previously attained from single Taylor cones of organic electrolytes. </p> |
| title | Ionic Propulsion Based on Heated Taylor Cones of Ionic Liquids |
| url | https://doi.org/10.2514/1.5493 |