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21st Scientific Meeting

Next Thursday, we will have our 21st Scientific Meeting. This time, Dr. Susana Barbosa, a Senior Researcher from INESC TEC will give us a talk entitled "Radon: where, how, and why?" Don't Miss It! Be Where The Action Is!
When Apr 30, 2015
from 02:30 to 03:30
Where Room 004, Mathematics Department, FC1
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Abstract:

Radon (222 Rn) is a naturally occurring colorless, odorless and radioactive noble gas. It is generated within solid mineral grains by the radioactive decay of radium (226 Ra). Since radium is present in virtually every mineral material, radon is ubiquitous in the natural environment, constantly produced in every rock, soil or aquifer matrix. Radon atoms  generated inside mineral grains can escape into the air or water-filled pore space, and further migrate by diffusion and/or advection to the subsurface air or water medium/phase. Radon is a potential health hazard when inhaled, as its short-lived decay products can
be deposited on respiratory tract tissues and damage the cells, contributing to an increased risk of lung cancer. Its radioactive nature makes radon easily measurable by nuclear techniques, even in very small amounts. Furthermore, its half-life of 3.8 days, its widespread occurrence in nature, and its unique characteristics as a non-reactive (noble) element make it particularly suitable for tracking time-varying environmental phenomena. During the last decades, radon has found a variety of geoscientific applications, ranging from its utilization as a potential earthquake precursor and as a proxy of tectonic stress, to a wide range of applications as a tracer in air, soil and water, and in diverse natural environments, from volcanic to marine and hydrological settings. This talk will focus on the where, how and why of radon monitoring, the potential for sensor development, and further practical applications.

About Dr. Susana Barbosa:

Susana Barbosa graduated in Physics/Applied Mathematics from University of Porto in 1998. In 2006 she obtained her PhD from the University of Porto in Surveying Engineering.
Nowadays she is a Senior Researcher at INESC TEC. Before she was a senior researcher at IDL in University of Lisbon, and a Postdoctoral Researcher at the Geological Survey of Israel and at Danish National Space Center (DTU).
Her   research   is   highly   interdisciplinary,   with   a   strong   emphasis   on   time   series   analysis   and methodological approaches for the analysis of environmental data.   In recent years she have been focused on the study of natural radioactivity phenomena and the application of radon as an ultra trace component for tracking temporally varying processes in the geologic environment and in the atmosphere.  She is editor of one book and three topical volumes. Author of 3 book chapters and more than 35 peerreviewed articles in international (ISI) journals.


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