Mappping Natural Radiation Dose Rate Using NaI(Tl) Scintilator and Geiger Muller in High Natural Background Radiation Areas: Study Case in Mamuju Regency, West Sulawesi Adi R.A.Abdullah (a), Sidik Permana (a,b,c,d), Wahyu Srigutomo (d), Alan Maulana (e), Haryo Seno (e), Rakotovao L. Omega(a), Ismail Humolungo (b), Fungki I. Nasyidiyah(b), Zulfahmi (c), Frafti Rejeki (c), Rahmi Ezlufiah (c)
a. Doctoral Program in Nuclear Engineering Department, Institut Teknlogi Bandung, Jl. Ganesha No. 10, Bandung, Indonesia.
b. Master Program in Nuclear Science and Engineering Department, Institut Teknlogi Bandung, Jl. Ganesha No. 10, Bandung, Indonesia.
c. Master Program in Physics of Teaching, Institut Teknologi Bandung, Jl. Ganesha No. 10, Bandung, Indonesia.
d. Physics Department, Institut Teknologi Bandung, Indonesia.
e. Badan Riset dan Inovasi Nasional, Jl. Tamansari No. 71, Bandung, Indonesia.
Abstract
NaI(Tl) Scintilator and Geiger Muller are two tools commonly used to detect radiation levels associated with radioactive materials. Both have different ways of working, where the NaI(TL) Scintilator is used to detect gamma radiation while Geiger Muller can detect alpha, beta, and gamma radiation simultaneously. These two tools are used in measuring natural radiation in Mamuju Regency, West Sulawesi, which is the area with the highest natural radiation level in Indonesia. Random Systematic Technique is used in data acquisition, where the design for taking the measuring points uses a gridding system with a size of 2 x 2 km2. The data shows that the average value of the natural radiation dose rate measured by the NaI(Tl) Scintilator is 0.123 Sv/hr and by Geiger Muller 0.3351 Sv/hr. The measurement results by the Geiger Muller instrument were 26.859 greater than the results of the NaI(Tl) Scintilator. The measured radiation value is almost 10 times the natural radiation dose rate in West Java. This shows that the mineralization of radioactive elements formed in Mamuju Regency contributes significantly to the high dose rate value measured in this study
