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All Journal Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Jurnal Sains dan Teknologi Jurnal Fisika Unand SEMIRATA 2015 JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI JOURNAL ONLINE OF PHYSICS Journal of Physics: Theories and Applications INDONESIAN JOURNAL OF APPLIED PHYSICS Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal Jurnal Ilmu Fisika BERNAS: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Indonesian Journal of Community Empowerment and Service
Sri Oktamuliani
Departemen Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Andalas, Kampus Unand Limau Manis, Padang, 25163
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Journal : Journal of Physics: Theories and Applications

 1 
Comparison of Absorbed Dose in Plasticine Bolus and Silicone Rubber Bolus Leony Chantika Leony; Viesca Fredilla Hanif; Eli Defira; Sri Oktamuliani Oktamuliani; Afdhal Muttaqin; Muhammad Ilyas
Journal of Physics: Theories and Applications Vol 6, No 1 (2022): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jphystheor-appl.v6i1.59117

Abstract

Bolus is a radiotherapy device used to increase the surface dose in the skin surface area when using electron or photon beams. The most commonly used bolus is a bolus made from plasticine, in addition to a plasticine bolus there is also a bolus made from silicone rubber which is currently being developed. This study aims to determine which bolus is more effectively used in radiotherapy, by comparing the absorbed dose, the value of Relative Electron Density (RED), and the transmission factor of each bolus. In this study, silicone rubber and plasticine boluses were made with dimensions of 12 cm x 12 cm, the variation of energy used in LINAC was 9 MeV and 12 MeV and the thickness variation of each bolus was 0.5 cm, 1.0 cm, 1, 5 cm and 2.0 cm. The RED value obtained from the plasticine bolus for a thickness of 0.5 cm is 0.837 g/cm3, a thickness of 1.0 cm is 1.011 g/cm3, a thickness of 1.5 cm is 1.06 g/cm3, and a thickness of 2.0 cm of 1.072 g/cm3, while for silicone rubber bolus for a thickness of 0.5 cm is 1.146 g/cm3, a thickness of 1.0 cm is 1.151 g/cm3, a thickness of 1.5 cm is 1.17 g/cm3, and a thickness of 1.5 cm is 1.17 g/cm3 2.0 cm is 1.193 g/cm3. From the results of the study for the RED value of each bolus, it can be concluded that the silicone rubber bolus has a RED value that is more consistent with the water density value compared to the plasticine bolus. Silicone rubber and plasticine boluses can also be said to be absorbent materials because the transmission factor value of both boluses is below 100%. From the results of the study, silicone rubber boluses were more able to reduce the range of absorbed doses compared to plasticine boluses.
Determination of Natural Radioactivity Level on Soil and Radiological Hazards in The Geotermal Area of Solok South, West Sumatera Nurul Khaira Sabila; Dinda Nurul Syifa; Mohammad Randy Alhafiz; Sri Oktamuliani
Journal of Physics: Theories and Applications Vol 5, No 2 (2021): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jphystheor-appl.v5i2.59099

Abstract

Solok Selatan is one of the areas in West Sumatra that has geothermal potential, contains much higher levels of radioactive substances in the soil in the form of Radium (Ra-226), Thorium (Th-232), and Potassium (K-40).  This study aimed to measure the concentration of Ra-226. Th-232, and K-40 contained in the soil in the Solok Selatan which was then reviewed based on PERKA BAPETEN No. 9 of 2009 and UNSCEAR 2000, also evaluates the average radium equivalent activity (Raeq), representative level index (Iyr), external hazard index (Hex). Soil samples were collected from seven different locations. The radionuclide activity concentration was measured by using a gamma spectrometer in the PTKMR BATAN laboratory, with the results of the average radionuclide measurement Ra-226 being 28.58  Bq/kg, Th-232 was 44.74  Bq/kg and K-40 at 323.29  Bq/kg. For the average value of Raeq is 118,051 Bq/kg, Iyr is 0.853 and Hex is 0.335. Based on BAPETEN PERKA No. 9 of 2009 and UNSCEAR 2000, the radionuclide activity concentration was found still within safe limits. It does not pose a health hazard to the people living in the area.
Co-Authors Adrial, Rico Afdal Afdal Afdal Afdal Afdal Afdal, Afdal Afdhal Muttaqin Afifah Nabilah Ahmad Fauzi Pohan Alimin Mahyudin Arif Budiman Astuti Astuti - Astuti Astuti Astuti Astuti Astuti Astuti Aulia Firma Betta Centaury Caredek, Puspa Tirta Dahyunir Dahlan Damayanti, Elok Dedi Mardiansyah Dian Fitriyani Dian Fitriyani Dian Milvita Dinda Nurul Syifa Dinda Nurul Syifa Dwi Pujiastuti Dwi Pujiastuti Dwi Puryanti Eif Sparzinanda Eli Defira Elistia Liza Namigo, Elistia Elvaswer Elvaswer Faza Atika An'umillah Faza Atika An’umillah Feriska Handayani Irka, Feriska Handayani Fitra Ramadana Fulki Fiarka Gunawan Gunawan Gunawan Gunawan Haritsul Haq Harmadi Harmadi Harmadi Harmadi Harmadi Hasnel Sofyan Imam Taufiq Imam Taufiq Intan Apriliani Syaridatul Mu'minah Intan Apriliani Syaridatul Mu'minah Iqbal Alief Iqbal Ramadhan Iqbal Ramadhan Ishii, Takuro Kaoru Hasegawa Kusdiana Kusdiana Kusdiana Kusdiana Kusdiana Kusdiana Kusdiana Kusdiana, Kusdiana Lazuardi Umar Leli Nirwani Leony Chantika Leony M. Dlorifun Naqiyyun M. Dlorifun Naqiyyun Mahdiyah, Luqyana Marzuki Marzuki Marzuki Marzuki Meqorry Yusfi Mohammad Ali Shafii Mohammad Randy Alhafiz Muhammad Arif Muhammad Arif Muhammad Ilyas Muhammad Kahfi Muhammad Kahfi Muji Wiyono Muldarisnur, Mulda Mutya Vonnisa Naela Amalia Zulfa Naela Amalia Zulfa Nazri MZ Nazri MZ, Nazri Nehru Nehru Nini Firmawati Nunung Nuraeni Nurul Hasanah Nurul Khaira Sabila Pratama, Andra Puspa Tirta Caredek Rahmat Rasyid Rahmat Rasyid Ramacos Fardela Rinnesa Apria Ernando Rizka Mutik Siyami Saijo, Yoshifumi Salim Muhaimin Samsidar Samsidar Samsidar Samsidar Siyami, Rizka Mutik Solly Aryza Sri Handani Tadanori Minagawa Takuro Ishii Trengginas Eka Putra Sutantyo Usna, Sri Rahayu Alfitri Vanessa Illona Giovanni Veithzal Rivai Zainal Viesca Fredilla Hanif Wahyudi Wahyudi Wahyudi Wahyudi Wildian Wildian Wiyono, Muji Wulandani Liza Putri Yoshifumi Saijo Yoshifumi Saijo Yuliandari, Annisa Yusfi, Meqqory Zulfi Zulfi Zulfi Zulfi Zulfi Zulfi, Zulfi