| 摘要 |
Electron multiplier (10) of the kind in which a charge current is amplified by successive passage to and secondary emission of electrons from dynodes (16) arranged in two opposed rows (12, 14). The multiplier is arranged for application of electric charge to the dynodes so as to focus the charge current on to ones of the dynodes in succession, alternating between the rows. The dynodes (16) have electron emissive surfaces (18) to which the charge current passes and angled flanges (20, 22) located at opposite edges of the surfaces. The surfaces (18) are preferably formed by aluminium foil (73). The rows of dynodes (16) are supported on opposed cantilevered insulating members (26, 32) by crimped straps (28). Also, a dynode array in which the surfaces (18) of the dynodes are flexible foils removably positioned on supporting portions of the respective dynodes. |
