Ji, Qinchung
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A segmented ring, cylindrical ion trap source for time-of-f..:

Ji, Qinchung ; Davenport, Michael R. ; Enke, Christie G..
Journal of the American Society for Mass Spectrometry.  7 (1996)  10 - p. 1009-1017 , 1996
 
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Method for the design of broad energy range focusing reflec..:

Vlasak, Paul R. ; Beussman, Douglas J. ; Ji, Qinchung.
Journal of the American Society for Mass Spectrometry.  7 (1996)  10 - p. 1002-1008 , 1996
 
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