In order to raise the throughput of low-energy x-ray signals appearing in a background of high-energy pulses, a new pulse-processor that measures the rising time of a trapezoidal waveform instead of the peak height has been developed. A rectangular pre-filter and a gated integrator are used to make the wave-shape at the shaper output linear. A rectangular pulse is formed by adding a differential step signal and its integration. The rising time of the trapezoidal waveform is inversely proportional to the height of the input step pulse. Therefore, processing time for a high-energy pulse is shorter than that for low-energy ones. Consequently, the pile-up loss of the low-energy X-rays is reduced.
|出版ステータス||Published - 1995|
|イベント||Proceedings of the 1995 IEEE Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 3) - San Francisco, CA, USA|
継続期間: 1995 10月 21 → 1995 10月 28
|Other||Proceedings of the 1995 IEEE Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 3)|
|City||San Francisco, CA, USA|
|Period||95/10/21 → 95/10/28|
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