常見例句A pulse from an intense laser or particle beam, however, creates a disturbance in the plasma. 然而,一個從高密度的雷射或粒子束所產(chǎn)生的脈沖,可以對電漿產(chǎn)生擾動。The power source is not microwave radiation but is either a laser beam or a charged particle beam. 能量的來源不是微波幅射,而是雷射光束或是帶電粒子束。Fortunately, when a laser or charged particle beam is sent through a plasma, interaction with the plasma can create a longitudinal electric field. 幸運的是,當(dāng)雷射或帶電粒子穿過電漿時,與電漿的作用可創(chuàng)造出縱向的電場。The process is the same as in the laser wakefield case, except now the particle beam's electric field does the pushing instead of the laser beam's radiation pressure. 這個過程跟雷射尾跡場的情形一樣,只是現(xiàn)在推動電子的,是粒子束的電場而不是雷射光束的輻射光壓。P.Banford,The Transport of Charged particle Beams,E.& F.N. 效應(yīng)對于束流輸運系統(tǒng)設(shè)計的影響及修正。When charged particle beams traverse in an accelerating structure, the excited wake fields may dilute the beam energy spread and emittance. 帶電粒子束在穿過加速結(jié)構(gòu)時激起的尾場,會導(dǎo)致束流能散和發(fā)射度的增大。 返回 particle beam