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<p>differences can create high exhaust velocities. This reduces the amount of <a href="page.php?w=reaction_mass">reaction mass</a> or propellant required, but increases the amount of specific <a href="page.php?w=power_%28physics%29">power</a> required compared to <a href="page.php?w=chemical_rocket">chemical rocket</a>s. Ion thrusters are therefore able to achieve high <a href="page.php?w=specific_impulse">specific impulse</a>s. The drawback of the low thrust is low acceleration because the mass of the electric power unit directly correlates with</p><p>
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