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7. Distribution of 226Ra, 232Th and 40K in Kanyakumari beach placer deposits along Tamil Nadu coast, India.

Author

Natarajan, Thennaarassan, Sahoo, Sarata Kumar, Nakajima, Tetsuo, Veerasamy, Nimelan, Yamazaki, Shinnosuke, Inoue, Kazumasa, and Ramola, Rakesh Chand

Subjects
*BACKGROUND radiation, *ABSORBED dose, *NATURE reserves, *MONAZITE, *MINERALS
Abstract

Distributions of 226Ra, 232Th and 40K were studied in the coastal region of Kanyakumari district, a high background natural radiation area (HBNRA). The absorbed gamma dose rate ranged from 107 ± 11 to 41,126 ± 187 nGy/h. The radiation hazard parameters were found to be much higher than the UNSCEAR world average values. 232Th/226Ra activity ratios ranged from 3 to 45, which indicates the collected sand samples may be rich in Th bearing monazite minerals that are mainly responsible for the enhanced radiation level in the Kanyakumari HBNRA. [ABSTRACT FROM AUTHOR]

Published
2024
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