Abdullah, Bualkar
Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Published : 2 Documents
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Determining X-Ray Effective Energy in Linear Accelerator (LINAC) Radiotherapy Instrument Fauziah, Fauziah; Abdullah, Bualkar
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 7, No 1 (2018): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : UIN Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v7i1.2336

Abstract

This research in determining x-ray effective energy in linear accelerator (Linac) radiotherapy device was done using copper plates at different thicknesses by determining the Half Value Layer (HVL) for each energy. The purpose of this research is to know the amount of effective energy used in radiotherapy linear accelerator. The results showed that the energy of 6 MeV obtained 2,714 MeV of effective energy at HVL 4,500 mm and at the energy of 10 MeV obtained 4,231 MeV of effective energy at HVL 4,500 mm.
Fabrikasi Bahan Penyerap Gelombang Elektromagnetik Berbasis CuC Hendri, Hendri; Abdullah, Bualkar; Tahir, Dahlang
Jurnal Fisika FLUX Vol 15, No 2 (2018): Jurnal Fisika FLUX Edisi Agustus 2018
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v15i2.4903

Abstract

Fabrikasi bahan penyerap gelombang elektromagnetik berbasis CuC telah dilakukan. Tembaga Karbon (CuC) diolah dengan metode kompaksi/pemadatan, karakterisasi dilakukan dengan menggunakan XRD, FTIR dan VNA. Penyerap gelombang elektromagnetik (reflection loss (RL)) diperoleh pada rentang -17,73 dB hingga -24,94 dB. Nilai RL dipengaruhi oleh konsentrasi karbon aktif (AC). Spectrum RL terbaik diperoleh pada frekuensi 4 GHz – 5 GHz.