DETERMINATION OF RADIOACTIVITY LEVELS AND ~(222)Rn EXHALATION RATES IN SOIL AROUND IPEN FACILITIES

摘要

Humans are exposed to natural radiation; soil is a major source of external and internal exposure of radiation. The external exposure from the soil is associated with gamma radiation and internal exposure with radon inhalation1. Exposures of radiation derived from soil are different in each region. The aim of this study is to evaluate radionuclides content, ~(222)Rn exhalation rates, radium equivalent activity and hazard indices in soil samples around Institute de Pesquisas Energeticas e Nucleares (IPEN) facilities.