EA-DF電子銃のダイナミック電圧低減
1991 年 15 巻 72 号 p. 27-32
詳細
1991 年 15 巻 72 号 p. 27-32
Dynamic focus voltage for EA-DF lens electron gun is reduced 42 to 48%, without deteriorating beam spot characteristics, by adding one more quadrupole and three more dynamic focus lenses in the gun. Contrary to ordinal operation of conventional gun, quadrupole lens strength is maximized when the beam is not deflected.
