Analisis Laju Reaksi Neutron Dalam Sel Bahan Bakar Nuklir Pada Reaktor Cepat

Authors

  • Reni Martha
  • Mohamad Ali Shafii
  • Afdal Afdal

DOI:

https://doi.org/10.25077/jif.8.2.70-77.2016

Abstract

Analisis laju reaksi neutron dalam sel bahan bakar nuklir pada reaktor cepat sangat penting dilakukan, karena laju reaksi fisi, serapan dan total yang merata dapat mengurangi pemuncakan daya (power peaking) yang tidak diinginkan. Penelitian ini menggunakan metode collision probability (CP) dengan pendekatan flat flux yang melibatkan proses homogenisasi sel bahan bakar nuklir. Dari hasil homogenisasi sel dapat diperoleh distribusi fluks neutron sebagai fungsi energi grup. Selanjutnya dihitung laju reaksi fisi, serapan dan total pada setiap region sel. Laju reaksi fisi mengalami penurunan di daerah energi tinggi akibat adanya peristiwa tumbukan elastik yang menyebabkan neutron lebih mudah kehilangan energy. Laju reaksi serapan berfluktuasi pada bahan bakar, sedangkan pada kelongsong dan pendingin nilainya sangat rendah yaitu kurang dari reaksi/cm3s. Laju reaksi total mempunyai nilai yang tinggi pada daerah energi tinggi yaitu rentang antara   sampai dengan  reaksi/cm3s sedangkan pada daerah energi rendah nilainya sangat kecil yaitu kurang dari  reaksi/cm3s.

 

Kata kunci : fluks neutron, laju reaksi, reaktor cepat

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How to Cite

Martha, R., Shafii, M. A., & Afdal, A. (2017). Analisis Laju Reaksi Neutron Dalam Sel Bahan Bakar Nuklir Pada Reaktor Cepat. JURNAL ILMU FISIKA, 8(2), 70–77. https://doi.org/10.25077/jif.8.2.70-77.2016

Issue

Vol. 8 No. 2 (2016): September 2016

Section

Research Article

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