title: Natural radioactivity and radon exhalation rate of soil in southern Egypt.
abstract: The level of natural radioactivity in soil of 30 mining samples collected from six locations in southern Egypt was measured. Concentrations of radionuclides in samples were determined by gamma-ray spectrometer using HPGe detector with a specially designed shield. The obtained results of uranium and thorium series as well as potassium (K-40) are discussed. The present data were compared with data obtained from different areas in Egypt. Also, a solid state nuclear track detector SSNTD (Cr-39) was used to measure the radon concentration as well as exhalation rate for these samples. The radon concentrations were found to vary from 1.54 to 5.37 Bq/kg. The exhalation rates were found to vary from 338.81 to 1426.47 Bq/m2d. The values of the radon exhalation rate are found to correspond with the uranium concentration values measured by the germanium detector in the corresponding soil samples.
authors.affiliation: Nuclear Physics Laboratory, Faculty of Girls, Ain-Shams University, Heliopolis, Cairo, Egypt.
authors.forename: A
authors.initials: A
authors.lastname: Sroor
authors.forename: S M
authors.initials: SM
authors.lastname: El-Bahi
authors.forename: F
authors.initials: F
authors.lastname: Ahmed
authors.forename: A S
authors.initials: AS
authors.lastname: Abdel-Haleem