20 cm XENON ION ENGINE HOLLOW CATHODE 3 000 HOURS LIFE-TEST
 
                 
                
                    
                                        
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Graphical Abstract
 
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Abstract
    Ongoing life-test of hollow cathode has been introduced.The result indicated that the performance of hollow cathode has not show degradation trend after 3 000 hours life-test.The result has also showed the hollow cathode has good antipoisoning traits under air exposure condition.
 
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