电子辐射 V<<C water VsC X-rays anode electrons cathode Filament Note:Angle-dependent doppler shift λ='(1-v/ccos0) ='(1-v/ccose) rotating anode water (a) (b) in out 0= 27 B B R sine X-rays X-rays Radius R 8= Radiation The cone half angle pulse electrons e sets the limits of 2△T arc-length from which radiation can be Time cathode observed. Filament电子辐射