KARAKTERISASI DOSIMETRI SUMBER BRAKITERAPI IR-192 MENGGUNAKAN METODE ABSOLUT

Authors

  • Mahmudi Rio Putra Jurusan Fisika FMIPA Universitas Andalas, Padang Kampus Unand Limau Manis, Pauh Padang 25163
  • Dian Milvita Jurusan Fisika FMIPA Universitas Andalas, Padang Kampus Unand Limau Manis, Pauh Padang 25163
  • Heru Prasetio PTKMR-BATAN, Jakarta

DOI:

https://doi.org/10.25077/jfu.4.2.%25p.2015

Abstract

ABSTRAK

Telah dilakukan penelitian tentang karakterisasi dosimetri sumber brakiterapi Ir-192 menggunakan metode absolut. Karakterisasi yang dilakukan pada penelitian ini meliputi laju kerma dan kuat kerma dari sumber brakiterapi Ir-192 buatan BATAN. Pengukuran dilakukan menggunakan detector extrapolation chamber pada jarak 10 cm dan  divariasikan pada jarak 20 cm, 30 cm, 40 cm, dan 50 cm sebagai validasi jarak. Sebagai validasi alat ukur dilakukan  pengukuran menggunakan detektor farmer yang telah terkalibrasi dengan Ir-192. Proses pengambilan data dilakukan dengan cara pengukuran pancaran radiasi Ir-192 selama satu menit dan dikonversikan menjadi laju kerma dan kuat kerma. Berdasarkan  penelitian  ini diperoleh hubungan  laju kerma berbanding terbalik dengan kuadrat jarak antara detektor dengan sumber radiasi, kuat kerma yang di pancarkan sumber Ir-192 buatan BATAN bernilai 7,64 x 10-8 Gy s-1 m2.

Abstract

It had been done a research to determine the characterization of dosimetry on Ir-192 brachytherapy source by using absolute method. The characterization which was done in this research involved kerma speed  and kerma work on Ir-192 brachytherapy source made by BATAN. The measurement was done by using detector extrapolation chamber against 10 cm, 20 cm, 30 cm, 40 cm, and 50 cm as distance validity and the measurement used farmer detector as tool measurement validity which had been calibrated with Ir-192. The technigue of data collection was done by measuring radiation of Ir-192 for one minute and converting it to be kerma speed and kerma work. The result of this research is that kerma speed is inversely with distance guadrate between detector and radiation source, the kerma work which is amitted by Ir-192 source made by BATAN is 7,64 x 10-8 Gy s-1 m2.

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Published

2024-10-26

How to Cite

Putra, M. R., Milvita, D., & Prasetio, H. (2024). KARAKTERISASI DOSIMETRI SUMBER BRAKITERAPI IR-192 MENGGUNAKAN METODE ABSOLUT. Jurnal Fisika Unand, 4(2). https://doi.org/10.25077/jfu.4.2.%p.2015

Issue

Vol. 4 No. 2: April 2015

Section

Articles

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Copyright (c) 2024 Mahmudi Rio Putra, Dian Milvita, Heru Prasetio

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