Skip Navigation


Radiation Protection Dosimetry Advance Access originally published online on July 20, 2004
Radiation Protection Dosimetry 2004 111(2):229-235; doi:10.1093/rpd/nch328
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
111/2/229    most recent
nch328v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (1)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Ramasamy, V.
Right arrow Articles by Gajendran, V.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ramasamy, V.
Right arrow Articles by Gajendran, V.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Radiation Protection Dosimetry Vol. 111, No. 2 © Oxford University Press 2004; all rights reserved

Technical Note

Natural radioactivity measurements in beach-rock samples of south-east coast of Tamilnadu, India

V. Ramasamy1,*, M. Dheenathayalu1, R. Ravisankar1, V. Ponnusamy1, G. Victor Rajamanickkam2, DajKumar Sahayam2, V. Meenakshisundram3 and V. Gajendran3

1 Department of Physics, Annamalai University, Annamalai Nagar, 608 002, India
2 Department of Earth and Industrial Science, Tamil University, Thanjavur, 613 005, India
3 Health and Safety Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, India

* Corresponding author: srsaranram{at}rediffmail.com

The concentration of primordial radionuclides in beach-rock samples of the south-east coast of Tamilnadu, India has been measured using gamma ray spectrum of rock. The mean activities of 232Th, 238U and 40K are 144.18, 29.25 and 267.48 Bq kg–1 respectively. In situ measurements were also carried out using environmental radiation dosemeter. The linear correlation coefficient was obtained. The average activity of concentration of 232Th in the present study is 2.5 times higher than the world median value while the activity of 238U and 40K were found to be lower. This may be due to the heavy minerals present in the study area. In the present study, the calculated activity ratio (Th/U) is higher than the crustal rocks. This may be due to changes in the crustal composition through time (mafic to felsic) that are reflected by a change in the Th and U abundances in sedimentary rocks, and also increase in carbon content with time resulted in the decrease in U content and increase in Th/U ratio.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Radiat Prot DosimetryHome page
T. Jabbar, K. Khan, M. S. Subhani, P. Akhter, and A. Jabbar
Environmental gamma radiation measurement in District Swat, Pakistan
Radiat Prot Dosimetry, December 1, 2008; 132(1): 88 - 93.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.