شبیه‌سازی یک سیستم برش‌نگاری گامای گسیلی جهت ارزیابی فقدان جزئی مجتمع‌های سوخت هسته‌ای تابش‌دیده

نویسندگان

گروه فیزیک هسته‌ای، دانشکده علوم پایه، دانشگاه مازندران، بابلسر، مازندران

چکیده

سیستم برش‌نگاری گامای گسیلی یکی از متداول‌ترین سیستم‌های تصویربرداری پزشکی می‌باشد که در سال‌های اخیر جهت پایش یک‌پارچگی و تعیین عیوب سوخت هسته‌ای استفاده شده است. در این پژوهش، قابلیت سیستم برش‌نگاری گامای گسیلی جهت تصدیق فقدان جزئی مواد هسته‌ای در مجتمع‌های سوخت هسته‌ای تابش‌دیده‌ مورد بررسی قرار گرفته است. بدین منظور یک سیستم نوعی برش‌نگاری گامای گسیلی شبیه‌سازی شده است. این سیستم قادر است تصاویر سطح مقطعی از سوخت تابش‌دیده تولید کرده و با پردازش تصاویر مذکور، فقدان جزئی سوخت را مورد بررسی قرار دهد. لازم به ذکر است که در این شبیه‌سازی، اصلاح تضعیف پرتو گاما درنظرگرفته شده است. هم‌چنین با استفاده از الگوریتم توسعه داده شده، توانایی سیستم برش‌نگاری گامای گسیلی در محاسبه توزیع فعالیت نسبی میله‌های سوخت در یک مجتمع سوخت هسته‌ای مورد بررسی قرار گرفته است.

کلیدواژه‌ها


عنوان مقاله [English]

Simulation of a gamma emission tomography system for evaluation of partial defects of irradiated nuclear fuel assemblies

نویسندگان [English]

  • Amir Payani
  • S. Mohammad Motevalli
چکیده [English]

The gamma emission tomography system is one of the most common medical imaging systems that have been used to monitor the integrity and defect of nuclear fuel in recent years. In this research, the capability of gamma emission tomography system for partial defect verification of irradiated fuel assemblies is investigated. For this reason, a typical gamma emission tomography system is simulated. This system is proficient for obtaining cross-sectional images of the irradiated fuel assembly in the spent fuel pool and investigates the fuel partial defect by processing them. It is noted that the gamma attenuation correction is considered in this study. Also, the ability of gamma emission tomography system for calculating the relative activity distribution of fuel rods in a nuclear fuel assembly is examined by a developed algorithm.

کلیدواژه‌ها [English]

  • Gamma emission tomography
  • Irradiated fuel
  • Partial defect
  • Relative activity distribution.ribution
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