NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.48 [2010] >
IJPAP Vol.48(11) [November 2010] >


Title: Gamma radiation protection factor of building materials–Validation of wall reflections from measurements
Authors: Subbaiah, K V
Gopalani, Deepak
Gautam, C S
Jodha, A S
Meghwal, L R
Keywords: Reflected gamma radiation dose
MCNP
Gamma radiation protection factor
Building material attenuation
Issue Date: Nov-2010
Publisher: NISCAIR-CSIR, India
Abstract: The gamma radiation (INR and fallout radiations using 60Co and 137Cs sources, respectively) protection factors for 150 cm of soil (density=1.5 g/cc) followed by 21.5 cm specially prepared concrete (density=2.7 g/cc) have been estimated. Since the measurements are not amenable for such large thickness due to significant contributions from the scattered radiation, experiments are carried out for varying thickness and results are corroborated by Monte Carlo calculations. After ascertaining the calculated accuracy, the protection factors are deduced by Monte Carlo calculations. Simulations could reasonably predict the measurements within a factor of 2 for all the cases measured. It is inferred from the simulations that the dose contributions due to reflected radiations from the wall are significant when the material thickness exceeds 45.5 cm soil plus 21.5 cm concrete. Further, materials have been evaluated against fast neutrons using 252Cf source.
Page(s): 774-777
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.48(11) [November 2010]

Files in This Item:

File Description SizeFormat
IJPAP 48(11) 774-777.pdf183.37 kBAdobe PDFView/Open
 Current Page Visits: 727 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 607248 since 06-Feb-2009  Last updated on 31-Oct-2014Webmaster: nopr@niscair.res.in