title: Public exposure due to external gamma background radiation in boundary areas of Iran.
abstract: A monitoring program in boundary areas of a country is an appropriate way to indicate the level of public exposure. In this research, gamma background radiation was measured using TL dosimeters at 12 boundary areas as well as in the capital city of Iran during the period 2010 to 2011. The measurements were carried out in semi-annual time intervals from January to June and July to December in each year. The maximum average dose equivalent value measured was approximately 70 μSv/month for Tehran city. Also, the average dose values obtained were less than 40 μSv/month for all the cities located at the sea level except that of high level natural radiation area of Ramsar, and more than 55 μSv/month for the higher elevation cities. The public exposure due to ambient gamma dose equivalent in Iran is within the levels reported by UNSCEAR.
authors.affiliation: Nuclear Safety and Radiological Protection Research Department, Nuclear Science and Technology Research Institute, Tehran, Iran. Electronic address: mhosseini@aeoi.org.ir.
authors.forename: S M Hosseini
authors.initials: SM
authors.lastname: Pooya
authors.affiliation: Iran Nuclear Regulatory Authority, Tehran, Iran.
authors.forename: M R
authors.initials: MR
authors.lastname: Dashtipour
authors.affiliation: Iran Nuclear Regulatory Authority, Tehran, Iran.
authors.forename: A
authors.initials: A
authors.lastname: Enferadi
authors.affiliation: Iran Nuclear Regulatory Authority, Tehran, Iran.
authors.forename: T
authors.initials: T
authors.lastname: Orouji
mesh_terms: D001417:Background Radiation; D005720:Gamma Rays; D006801:Humans; D007492:Iran; D011829:Radiation Dosage; D000069079:Radiation Exposure; D011834:Radiation Monitoring; D013819:Thermoluminescent Dosimetry
keywords: Background; Cosmic ray; Gamma; Public exposure; Radiation; TLD