title: Environmental gamma dose measurements in Mexico City using TLD.
abstract: The aim of this work is to measure the gamma dose component of environmental radiation in Mexico City's metropolitan area. To perform the TL dosimetry, CaF2:Dy, CaF2:Mn, alpha-Al203:C and LiF:Mg, Cu, P crystals were used. The values of environmental gamma dose rate measured ranged between 83 and 112 nGy h-1 for the time interval going from January to August 1994. Outdoor dose rates were 85 nGy h-1 +/- 2% for city sites having soil of either volcanic or lacunar origin; this rate was 107 nGy h-1 +/- 2% at a nearby hill belonging to a volcanic chain. Indoor rates were about 20% higher than outdoor ones at the same location.
authors.affiliation: Instituto de Física, Universidad Nacional Autónoma de México, México DF, Mexico.
authors.forename: A
authors.initials: A
authors.lastname: Zárate-Morales
authors.forename: A E
authors.initials: AE
authors.lastname: Buenfil
mesh_terms: D005720:Gamma Rays; D008800:Mexico; D011829:Radiation Dosage; D011848:Radioactive Pollutants / Q000032:analysis*
chemical_list: D011848:Radioactive Pollutants