摘要 |
FIELD: physics. ^ SUBSTANCE: in a Wien filter, capacitor plates which create an electric field are not flat but cylindrical, which enables to focus charged particles in the region of the output diaphragm of a "Wien sector filter", and the input diaphragm of the Wien sector filter is placed at the focal point of a Hughes-Rozhansky energy analyser, having radius of the optical axis equal to the radius of the optical axis of the Wien sector filter, and placed in front of the Wien sector filter. ^ EFFECT: broader functionalities of charge particle mass analysers. ^ 2 cl, 3 dwg |