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J Radiat Prot > Volume 12(1); 1987 > Article
Journal of Radiation Protection 1987;12(1):12-0.
방사선 에너지 분석을 위한 MCA시스템 제작에 관한 연구
Construction of Multichannel Analyser with Successive Approximation Type ADC
Yook, Chong-Chul;Oh, Byung-Hoon;Kim, Young-Gyoon;
A basic multichannel analyser (MCA) system have been designed and constructed with the successive approximation type ADC (Analog to Digital Converter). Linear Gate, window, and palse stretcher consist of mainly linear and logic IC's, and are properly combined together to achieve short dead time and good linearity of the system. ADC 1211 (analysing time: $120{mu}sec$) and S-RAM (static random acess memory) 6264 are used in ADC module. Two 6264 memories are connected in parallel in order to-provide enough counting capacity ($2^{16}-1$). Interfaced microcomputer Apple II controls this system and analizes the counted data. The system is tested by input pulses between 0V to 10V from oscillator.
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Calculation of the Air-Scattering Dose Rate by the Single Scattering Approximation  1979 ;4(1)
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