GAMMA DOSE RATES IN THE HIGH BACKGROUND RADIATION AREA OF MANGALORE REGION, INDIA.

Radiat Prot Dosimetry

Center for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Mangalagangothri, India.

Published: October 2019

AI Article Synopsis

  • There have been reports of higher natural background radiation levels in Mangalore, India, due to scattered monazite sand on the beaches.
  • A study compared gamma dose rates in both normal and high radiation areas using portable gamma dosimeters and conducted in situ gamma-ray energy spectrum analysis.
  • Results from 2016-18 showed that most locations had gamma dose rates similar to normal regions, but some areas recorded higher rates, with maximum values reaching 530 nSv/h.

Article Abstract

Elevated levels of natural background radiation due to scattered patches of monazite sand around the beaches of Mangalore, India, have been reported earlier. A comparative study of gamma dose rates was performed in both normal background and high natural background radiation areas around Mangalore using different types of portable gamma dosimeters. In addition to this, gamma-ray energy spectra were acquired, in situ, using a NaI(Tl) based portable gamma spectrometer. Soil and sand samples were collected for laboratory analysis with HPGe detectors. Measurements were carried out during the years 2016-18 revealed that in majority of the locations the gamma dose rates were similar to the normal background regions, whereas, in certain locations the dose rates were higher with values up to 530 nSv/h.

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http://dx.doi.org/10.1093/rpd/ncz063DOI Listing

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