Monitoring of radon gas during 2020 year in São José dos Campos, tropical region of Brazil

International Journal of Applied Physics

© 2020 by SSRG - IJAP Journal

Volume 7 Issue 3

Year of Publication : 2020

Authors : Inacio M. Martin, Douglas C. Vilela, Anatoly A. Gusev

10.14445/23500301/IJAP-V7I3P112

How to Cite?

Inacio M. Martin, Douglas C. Vilela, Anatoly A. Gusev, "Monitoring of radon gas during 2020 year in São José dos Campos, tropical region of Brazil," SSRG International Journal of Applied Physics, vol. 7,  no. 3, pp. 79-82, 2020. Crossref, https://doi.org/10.14445/23500301/IJAP-V7I3P112

Abstract:

During the period from January 27 to November 13, 2020, on the ITA campus in the São José dos Campos tropical region of Brazil, the intensity of radon gas close to the Earth's surface was continuously measured every hour. In January, February, March, and April with 1900 hours measured due to the rainfall regime, the average intensity was ~ 15 Bq / m3. From 1900 hours to 5900 hours due to hot sun and very dry surface, the average intensity was ~ 30 Bq / m3. Between 5900 to 6900 hours measured also due to dry weather and very little rainfall in the region, the average measured radon gas returned to ~ 15 Bq / m3. An identical detector was placed at the same time in a tower 25 meters above the ground and the results were practically the same. These measures identified that the radon gas depends on the surface of the dry or wet earth and the intensity of the sunstroke at the location. With a lot of rain, the Earth remains very wet and there is almost no exhalation of radon gas. However, when heavy and fast rains arrive, there is an increase in the instantaneous radon gas due to the washing of this gas in the air molecules suspended in the lower local atmosphere.

Keywords:

tropical region, radon gas

References:

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