Indian Journal of Pure and Applied Physics

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Multilayer Stack Method for Precise Measurement of Radon Diffusion Coefficient of Different Materials


Affiliations
1 Department of Physics, Markanda National College, Shahabad, Kurukshetra, Haryana 136 135, India
2 Department of Physics, National Institute of Technology, Kurukshetra, Haryana 136 119, India
3 Principal, I.B Post Graduate College, Panipat, Haryana 132 103, India
4 Department of Physics, Pt. CLS Govt. College Karnal, Haryana 132 001, India
 

Radon-resistant materials are of great importance for High Background Radiation Areas. Depending on the radon diffusion coefficient, waterproofing and radon-resistant materials with thicknesses ranging from a few microns to several centimeters are used in various parts of the world. The cost of installation of an effective radon mitigation system varied with material properties, i.e., thickness and diffusion coefficient. The present study is concerned with the measurement of the radon diffusion coefficient through single and multilayer homogeneous and heterogeneous stacks of various waterproofing materials. One, two, and three layers of polyethylene, printing paper, mica sheets, PVC sheets, Mylar sheets and aluminum foil of varying thicknesses are tested for determination of diffusion length by the two-chamber method and the active scintillation radon monitor. The radon diffusion coefficient of materials varies from 10-13m2/s to 10-8m2/s for PVC sheet to paper sheet when a single layer is used and 10-11 m2/s to 10-13 m2/s for aluminum and polyethylene sheets in multi-layer stack arrangement. The radon diffusion coefficient for most of the materials reduces with increasing layers in the stack. By the use of these materials, 85-90 % of radon can be reduced by using single or multi-layer stack combination.

Keywords

Radon Diffusion Coefficient, Waterproofing Materials, Multi-Layer Stack.
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  • Multilayer Stack Method for Precise Measurement of Radon Diffusion Coefficient of Different Materials

Abstract Views: 115  |  PDF Views: 96

Authors

Amit Kumar
Department of Physics, Markanda National College, Shahabad, Kurukshetra, Haryana 136 135, India
Rajat Parkash
Department of Physics, National Institute of Technology, Kurukshetra, Haryana 136 119, India
Ajay Garg
Principal, I.B Post Graduate College, Panipat, Haryana 132 103, India
Nisha Mann
Department of Physics, Pt. CLS Govt. College Karnal, Haryana 132 001, India
Jawahar Lal
Department of Physics, Markanda National College, Shahabad, Kurukshetra, Haryana 136 135, India
R P Chauhan
Department of Physics, National Institute of Technology, Kurukshetra, Haryana 136 119, India

Abstract


Radon-resistant materials are of great importance for High Background Radiation Areas. Depending on the radon diffusion coefficient, waterproofing and radon-resistant materials with thicknesses ranging from a few microns to several centimeters are used in various parts of the world. The cost of installation of an effective radon mitigation system varied with material properties, i.e., thickness and diffusion coefficient. The present study is concerned with the measurement of the radon diffusion coefficient through single and multilayer homogeneous and heterogeneous stacks of various waterproofing materials. One, two, and three layers of polyethylene, printing paper, mica sheets, PVC sheets, Mylar sheets and aluminum foil of varying thicknesses are tested for determination of diffusion length by the two-chamber method and the active scintillation radon monitor. The radon diffusion coefficient of materials varies from 10-13m2/s to 10-8m2/s for PVC sheet to paper sheet when a single layer is used and 10-11 m2/s to 10-13 m2/s for aluminum and polyethylene sheets in multi-layer stack arrangement. The radon diffusion coefficient for most of the materials reduces with increasing layers in the stack. By the use of these materials, 85-90 % of radon can be reduced by using single or multi-layer stack combination.

Keywords


Radon Diffusion Coefficient, Waterproofing Materials, Multi-Layer Stack.

References