回旋加速器是加速带电粒子的装置,其主体部分是两个D形金属盒.

回旋加速器是加速带电粒子的装置,其主体部分是两个D形金属盒.两金属盒处在垂直于盒底的匀强磁场中,并分别与高频交流电源两极相连接,从而使粒子每次经过两盒间的狭缝时都得到加速,如图所示.现要增大带电粒子从回旋加速器射出时的动能,下列方法可行的是(      )

A.减小磁场的磁感应强度

B.减小狭缝间的距离

C.增大高频交流电压

D.增大金属盒的半径

 

 

答案

D

解析:略

 

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