University Of Tehran Press Pollution 2383-451X 11 2 2025 02 01 Investigation the Effect of Radon Pollution on Hair Structure 384 393 99858 10.22059/poll.2024.379235.2458 EN Mohamad Reza Rezaie Department of Nuclear Engineering, Faculty of Sciences and Modern Technologies, Graduate University of Advanced Technology, Kerman, Iran Behshad Valizadeh Nuclear Science and Technology Research Institute, Atomic Energy Organization, Tehran, Iran Yassin Heydarizade Department of Nuclear Engineering, Faculty of Sciences and Modern Technologies, Graduate University of Advanced Technology, Kerman, Iran Parvin Dehghanipour Department of Physics, Payame Noor University, Tehran, Iran Journal Article 2024 07 11 In this article, it has been tried to determine equivalent dose of hair, the number of track and the amount of damage or secondary elements produced in hair by radon and progeny alpha particles using Monte Carlo N Particle Version Extended (MCNPX) code and Geometry and Tracking 4 (Geant4) toolkit. The hair was put in the air of Tehran city with a Radon concentration of 104 Bq/m3  for 20 h irradiation time. The results show that during this period, 65 track/cm are created in hair with depths between 2 - 43 μm. Also, the 12C, 18O, 14N and 32S elements are produced in the hair with the number of 36, 135, 11, and 0.2, respectively, which indicates the breaking of hair composition. Also, Proton, Alpha and Gamma ray are generated in the hair structure with the number of 4590, 550 and 4790 respectively during this period. The secondary particles that produce by interaction of alpha with hair (such as 12C, 18O, 14N and 32S) usually have high energy during production and they can be damage the hair structure. The 36Cl and 18F radioactive elements with the number of 1.19 and 0.8 are created in the hair structure during this period. The equivalent dose of Radon and progeny in hair in this period is equal to 63 pGy (1.21 mSv as effective dose). https://jpoll.ut.ac.ir/article_99858_52eb04b00aa5e0a0d8c78673716a22e8.pdf