| 摘要 |
A semiconductor dual-axis positon sensor is connected inside, and at the output end, of a sealed, evacuated housing which contains a photocathode film at the input end thereof in optical communication with a phosphor layer. Pulses of light produced in the phosphor layer in response to incident nuclear particles or rays of electromagnetic radiation are converted to electrons in the photocathode film which are accelerated and focussed onto the semiconductor sensor to produce electrical signals from which the x and y coordinates and energy of the incident rays or particles are determined.
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