محاسبه تولید رادیوایزوتوپ تشخیصی ید-g120 از طریق واکنش 120Te(p,n)120gI با استفاده از کدهای هسته‌ای Talys و Geant4

نویسندگان

گروه فیزیک، دانشکده علوم پایه، دانشگاه ارومیه، ارومیه، آذربایجان غربی

چکیده

رادیوایزوتوپ ید-g120 با نیمه‌عمر 35/1 ساعت به‌دلیل گسیل پوزیترون در تصویربرداری PET استفاده می‌شود. در این مطالعه واکنش 120Te(p,n)120gI با استفاده از کدهای Geant4، SRIM و Talys جهت محاسبه‌ی برد پروتون، سطح مقطع و بهره‌ی تولید ید-g120 شبیه‌سازی شده است. مقدار برد پروتون در هدف تلوریوم-120 با استفاده از کدهای Geant4 و SRIM به‌ترتیب 59/725 و 68/731 میکرومتر در انرژی MeV 14 محاسبه شد. مقادیر سطح مقطع نیز با کدهای Geant4 و Talys در بازه‌ی انرژی 5/6 تا MeV 36 محاسبه و با مقادیر تجربی مقایسه گردید. مقدار ماکزیمم سطح مقطع با استفاده از کد Geant4 برابر 99/667 میلی‌بارن در انرژی MeV 14 و با کد Talys برابر با 83/537 میلی‌بارن در انرژی MeV 5/14 به‌دست آورده شده است. بهره‌ی تولید ید-g120 با استفاده از این کـدها در انرژی MeV 14 به‌ترتیب 73/642 و MBqμA-1h-1 94/346 محاسبه شده است.
 

کلیدواژه‌ها


عنوان مقاله [English]

Calculation of diagnostic radioisotope production of iodine-120g through 120Te (p, n) 120gI reaction using Talys and Geant4 nuclear codes

نویسندگان [English]

  • Farzad Isazadeh
  • Akbar Abdi Saray
چکیده [English]

Iodine-g120 radioisotope with a half-life of 1.35 hours due to positron emission is used in PET imaging. This radioisotope is produced through various reactions. In this study, the 120Te(p,n)120gI reaction has been simulated using Geant4-toolkit, SRIM and Talys codes to calculate proton range, cross section and production yield of iodine-120g. The range of protons in the target of tellurium-120 was calculated using Geant4-toolkit and SRIM codes to be 725.59 and 731.68 micrometers at 14 MeV energy, respectively. The values of proton range, cross section and production yield are compared with experimental data. The cross-sectional values were calculated with Geant4-toolkit and Talys codes in the energy range of 6.5 to 36 MeV and compared with the experimental values. The maximum cross-section was obtained using Geant4-toolkit equal to 667.99 mbarn at 14 MeV and Talys code equal to 537.83 mbarn at 14.5 MeV. The yield of iodine-g120 production using these codes in energy of 14 MeV has been calculated as 642.73 and 346.94 MBqμA-1h-1, respectively.

کلیدواژه‌ها [English]

  • Iodine-120g
  • Accelerator
  • Cross Section
  • Production Yield
  • Geant4-toolkit
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