محاسبه ثابت کالیبراسیون شمارنده فعال سازی با پوشش نقره ای و مقایسه آن با نتایج تجربی به منظور اندازه گیری بهره نوترونی در دستگاه پلاسمای کانونی

The silver activation counters are commonly used for pulsed-neutron yield measurements especially in plasma focus devices. The counter normally consists of a Geiger-Muller tube along with silver foils and polyethylene (as a moderator), which is calibrated against an Am-Be radioisotope neutron source. The neutrons, after being slowed-down in the polyethylene, activate the silver foils. By measuring the foil activity with a Geiger-Muller counter, the neutron yield is determined. In the present paper, the activation counter’s calibration constant calculation using the MCNP۴C code is explained. The calculated calibration constant is in good agreement with the experimental results.

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شمارنده فعال سازی نقره ای , ثابت کالیبراسیون , پلاسمای کانونی , کدMCNP , نوترون