PRODUKSI IODIUM-125 MENGGUNAKAN TARGET XENON ALAM
Sari
Iodium-125 merupakan radioisotop penting di bidang kedokteran nuklir. Iodium-125 dapat diproduksi melalui sasaran isotop Xe-124, baik menggunakan xenon diperkaya maupun xenon alam. Iodium-125 dengan radioaktivitas yang tinggi dapat diperoleh menggunakan xenon diperkaya. Namun, karena alasan penyediaannya, beberapa peneliti mengembangkan teknologi produksi menggunakan xenon alam. Tujuan dari kajian ini adalah mendapatkan karakteristik Iodium-125 yang dapat diperoleh dari fasilitas produksi yang ada di BATAN. Perhitungan dilakukan menggunakan gas xenon alam sebanyak 0,0223 mol. Iradiasi dilakukan sampai dengan 96 jam dan peluruhan sampai dengan 240 hari jam. Dari perhitungan diperoleh I-125 sebesar 0,384; 0,529 dan 0,583 GBq masing masing untuk iradiasi selama 24, 48 dan 72 jam. Konsentrasi radioaktivitas yang dapat diperoleh sebesar 0,128; 0,176 dan 0,194 GBq/ml. Pengotor radionuklida yang turut dihasilkan adalah Cs-135 dan Cs-137. Radioisotop Cs-135 dihasilkan sebesar 0,098; 0,113 dan 0,116 Bq dari iradiasi selama 24, 48 dan 72 jam. Sedangkan radioisotop Cs-137 dihasilkan sebesar 236 Bq dari iradiasi lebih dari 24 jam.
Kata kunci : iodium-125, produksi radioisotop, xenon alam
Iodine-125 is an important radioisotope in the field of nuclear medicine. Iodine-125 can be produced from Xe-124 target using natural or enriched xenon. Iodine with high radioactivity can be produced using enriched target. However, becauseof the availibility of the enriched xenon gas, some research groups develop the iodine production using natural xenon gas. The objective of this study is to obtain the characteritics of Iodine-125 produced by BATAN facility. Natural xenon gas 0.0223 mol is used in the calculation. Irradiation time is 96 hours and decay time is 240 hours. The calculation results show Iodine-125 with radioactivity 0.384, 0.529 and 0.583 GBq is obtained from irradiation time as long as 24, 48 and 72 hours. The maximum radioactivity concentrations are 0,128; 0,176 and 0,194 GBq/ml. Radionuclidic impurities are Cs-135 and Cs-137. Radioisotope of Cs-135 as high as 0.098, 0.113 and 0.116 Bq is produced from 24, 48 and 72 hours of irradiation. Cs-137 as high as 236 Bq is produced by more than 24 hours of irradiation.
Key words:iodine-125, radioisotope production, natural xenon.
Kata kunci : iodium-125, produksi radioisotop, xenon alam
Iodine-125 is an important radioisotope in the field of nuclear medicine. Iodine-125 can be produced from Xe-124 target using natural or enriched xenon. Iodine with high radioactivity can be produced using enriched target. However, becauseof the availibility of the enriched xenon gas, some research groups develop the iodine production using natural xenon gas. The objective of this study is to obtain the characteritics of Iodine-125 produced by BATAN facility. Natural xenon gas 0.0223 mol is used in the calculation. Irradiation time is 96 hours and decay time is 240 hours. The calculation results show Iodine-125 with radioactivity 0.384, 0.529 and 0.583 GBq is obtained from irradiation time as long as 24, 48 and 72 hours. The maximum radioactivity concentrations are 0,128; 0,176 and 0,194 GBq/ml. Radionuclidic impurities are Cs-135 and Cs-137. Radioisotope of Cs-135 as high as 0.098, 0.113 and 0.116 Bq is produced from 24, 48 and 72 hours of irradiation. Cs-137 as high as 236 Bq is produced by more than 24 hours of irradiation.
Key words:iodine-125, radioisotope production, natural xenon.
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