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带电粒子在圆形有界匀强磁场中做不完整的圆周运动,由于粒子射入的速度不同,造成它在磁场中运动的圆弧轨道、偏转角度、运动时间等各不相同.规律1匀强磁场边界为圆形时,带电粒子的运动轨迹为一段圆弧,且关于磁场范围圆与粒子轨道圆圆心连线OO′对称.若带电粒子以垂直于磁场的速度沿磁场范围圆的半径方向入射,则在磁场中偏转后沿半径方向离开,如图1.由图知偏转角度大小与两圆半径的关系为tanθ/2=r/R.
The charged particles do incomplete circular motion in a circular bounded uniform magnetic field, and the circular arc orbit, the deflection angle and the movement time are different due to the different speed of particle injection. When the boundary of a strong magnetic field is a circle, the moving trajectory of the charged particle is a circular arc, and the circle of the magnetic field is symmetrical with the circular center line OO ’of the particle orbit. If the charged particle is perpendicular to the magnetic field in the radial direction Incident, then the deflection in the magnetic field along the radial direction, as shown in Figure 1. By the deflection angle of the two circles and the relationship between the radius of tanθ / 2 = r / R.