Analisis Faktor Pelemahan Neutron dari Berbagai Jenis Bahan untuk Aplikasi Moderator/Reflektor dan Batang Kendali Pada Reaktor Termal

Authors

  • Mulya Prasetya Laboratorium Fisika Nuklir, Jurusan Fisika, FMIPA, Universitas Andalas
  • Mohammad Ali Shafii Laboratorium Fisika Nuklir, Jurusan Fisika, FMIPA, Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.7.3.208-214.2018

Abstract

Salah satu cara untuk menentukan sifat moderator dalam reaktor termal dari berbagai bahan adalah dengan menganalisis faktor pelemahan neutronnya. Analisis faktor pelemahan neutron dilakukan pada beberapa jenis bahan berbentuk slab satu dimensi. Penelitian ini bertujuan untuk mengetahui sifat bahan yang cocok sebagai moderator dalam reaktor termal. Selain itu diperlihatkan juga bahan yang cocok sebagai batang kendali dan reflektor. Biasanya sifat-sifat bahan tersebut ditentukan berdasarkan data tampang lintang serapan dan hamburannya, namun dalam penelitian ini ditunjukkan bentuk pola pelemahan neutronnya. Penelitian ini dilakukan secara simulasi komputasi yang menampilkan pola faktor pelemahan neutron dengan menggunakan software MATLAB. Ketebalan bahan yang digunakan dalam penelitian ini adalah 20 cm. Terdapat sepuluh bahan yang diteliti, yaitu air ringan (H2O), air berat  (D2O), grafit (C), berrilium (Be), boron (B), hidrogen (H), helium (He), natrium (Na), besi (Fe) dan deuterium (D). Data penampang lintang bahan yang digunakan dalam penelitian ini adalah data penampang lintang total bahan yang merupakan penjumlahan dari nilai penampang lintang serapan dan penampang lintang hamburan. Hasil penelitian menunjukkan bahwa berdasarkan pola faktor pelemahan neutronya bahan yang cocok sebagai moderator dan juga reflector adalah air ringan (H2O), air berat (D2O), grafit (C) dan berrilium (Be). Selain itu, pada penelitian ini diperoleh bahan yang cocok sebagai batang kendali adalah boron (B).

Kata kunci: Faktor pelemahan neutron, moderator, reaktor termal, penampang lintang total

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Published

2018-07-02

How to Cite

Prasetya, M., & Shafii, M. A. (2018). Analisis Faktor Pelemahan Neutron dari Berbagai Jenis Bahan untuk Aplikasi Moderator/Reflektor dan Batang Kendali Pada Reaktor Termal. Jurnal Fisika Unand, 7(3), 208–214. https://doi.org/10.25077/jfu.7.3.208-214.2018

Issue

Vol. 7 No. 3 (2018)

Section

Articles

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Copyright (c) 2018 Mulya Prasetya, Mohammad Ali Shafii

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