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Atom Indonesia
Published by Badan Riset dan Inovasi Nasional
ISSN : 01261568     EISSN : 23565322     DOI : -
Core Subject : Science,
Energy Physics
Atom Indonesia is dedicated to publishing and disseminating the results of research and development in nuclear science and technology. The scope of this journal covers experimental and analytical research in nuclear science and technology. The topics include nuclear physics, reactor physics, radioactive waste, fuel element, radioisotopes, radiopharmacy, radiation, and neutron scattering, as well as their utilization in agriculture, industry, health, environment, energy, material science and technology, and related fields.
Arjuna Subject : Fisika dan Astronomi - Fisika Nuklir dan Molekuler, dan Ooptik
Articles 2 Documents
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Search results for , issue "article in press" : 2 Documents clear
Comparison of Electron Density and Absorption Dose Values of Artificial Boluses as Tissue Substitutes D. R. Putri; F. K. Hentihu; R. J. Stevenly; E. R. Putri
Atom Indonesia Article In Press
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/aij.2026.1633

Abstract

According to the Skin Cancer Foundation (SCF), approximately 1.8 million new cases of Squamous Cell Carcinoma (SCC) were reported globally in 2023. Radiotherapy remains a common treatment modality for SCC. However, delivering the maximum dose directly to the skin surface is often impeded by the skin-sparing effect of high-energy photon and electron beams. To overcome this limitation, a bolus, a tissue-equivalent material, is applied to bring the dose closer to the surface. This study aims to evaluate the electron density values derived from CT images and the absorbed doses of boluses fabricated from three different materials: resin Lycal 1079 (a propylene glycol-based compound), silicone rubber (polydimethylsiloxane), and plasticine (a mixture of stearate salt and glycerin). Dosimetric measurements were conducted using 6 MV photon beams and 12 MeV electron beams. Image analysis was performed using ImageJ and Matlab softwares. The irradiation setup employed a Source-to-Surface Distance (SSD) of 100 cm and a 10 × 10 cm² field size. Relative Electron Density (RED) values obtained from ImageJ for the resin and silicone rubber boluses were 1.007 and 1.188, respectively, while Matlab yielded RED values of 1.094 for resin and 1.194 for silicone rubber. For the plasticine bolus, both software tools produced a consistent RED value of 1.101. The findings indicate that beam energy has a significant impact on the absorbed dose at various phantom depths. Furthermore, all bolus materials increased the absorbed dose compared to setups without a bolus. Among the three materials, the resin bolus exhibited the most favorable characteristics, with a RED value closely approximating that of breast and skin tissue, highlighting its potential as an effective and economical tissue-equivalent bolus for clinical radiotherapy applications.
Effect of MoO3 on The Radiation Shielding Properties of Bismuth Boro-Tellurite Glass (B2O3-TeO2-Bi2O3-Li2O): Theoretical and Simulation Studies O. A. Putra; R. H. Asiah; H. Sutanto; S. Faniandari; E. B. Yutomo
Atom Indonesia Article In Press
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/aij.2026.1616

Abstract

This study aims to evaluate the efficiency of bismuth boro-tellurite glass modified with molybdenum oxide (MoO3) as a gamma-ray shielding material in the (50-x)B2O3-10TeO2-30Bi2O3-10Li2O-xMoO3 (x = 0, 4, 8, 12, and 16 mol%) glass system. Five designed compositions (x = 0-16 mol%) were evaluated over 0.01-15 MeV using XCOM (NIST) and Phy-X/PSD for derived shielding metrics. The calculation results from both programs agreed closely with a maximum difference of only 0.037%, confirming numerical consistency of MAC across tools. Estimated glass density increased with MoO3 content from 5.666 to 5.948 g/cm3 (BBTM1 to BBTM5), which raised LAC and improved thickness indicators. The results showed that at 0.05 MeV the highest LAC was recorded for BBTM5 (38.085 cm-1) compared with BBTM1-BBTM4 (35.364-37.409 cm-1), and at 1.00 MeV the HVL decreased from 1.789 cm (BBTM1) to 1.736 cm (BBTM5). Sample BBTM5, with the highest MoO3 concentration, consistently exhibited higher LAC and larger Zeff/Neff across energies, and a lower Transmission Factor (TF) across representative radioisotope energies (0.662-2.506 MeV), indicating superior gamma-ray shielding effectiveness.

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