引出束 meaning in English

ejected beam
exit beam
extracted beam

( 4 ) chapter vi . the theory of ion curren extraction of rf ion source is investigated , the reason of emission surface formation and its effect on ion curren extraction are reasearched emphatically
( 4 )对高频离子源的束流引出原理作了理论推导和分析，着重研究了发射面的形成及其对引出束流特性的影响。
( 3 ) chapter v . plasma characteristics of rf ion source is investigated . a zero - dimensional numerical dynamic colisional radiative atomic and molecular ( cram ) model is suggested to simulate the microphysical process . all species " population number densities in plasma are calculated in non - thermodynamics equilibrium condition , and proton content in extracted ion current are measured with 60 ? magnetic analyzer
( 3 )提出了高频离子源等离子体的零维cram模型( collisionalradiativeatomicandmolecularmodel ) ，计算了非平衡态( nte )下等离子体中分子、电子、离子、基态原子、激发态原子等粒子浓度，并在zf - 200kev中子发生器上，用60磁分析器实验测定了引出束流的质子比。