Measurement of Average Thermal Neutron Flux for PGNAA Setup

Authors(6) :-Dalpat Meena, S. K. Guptaa, H. S. Palsania, Narendra Jakhar, Naresh Chejara, Pushpa Meena

The prompt gamma neutron activation analysis (PGNAA) is widely used for detection and quantification of elements in samples of interest such as - archaeological, biological, medical, environmental samples etc. The detection limit of PGNAA setup for an element depends upon the neutron flux available at sample. The aim of this study is two-fold. First, to determine the sensitivity of setup for different sample configuration and second , to determine the average neutron thermal flux at sample of the PGNAA setup comprising a 5Ci Am-Be neutron source. The thermal neutron flux within water howitzer at different heights was measured using gold foil activation technique with and without cadmium covers. The experimental results indicate that the sensitivity of the setup is higher for aqueous form of the sample compare to the solid form of the sample. In 5L water howitzer of the setup, thermal and epi-thermal neutron fluxes gradually decreases with distances from the source. The measured average thermal neutron flux within 5 liter water howitzer is 3.8E+5 n/cm2 s.

Authors and Affiliations

Dalpat Meena
Department of Physics, University of Rajasthan, Jaipur, India
S. K. Guptaa
Department of Physics, University of Rajasthan, Jaipur, India
H. S. Palsania
Department of Physics, University of Rajasthan, Jaipur, India
Narendra Jakhar
Department of Physics, University of Rajasthan, Jaipur, India
Naresh Chejara
Department of Physics, University of Rajasthan, Jaipur, India
Pushpa Meena
Department of Zoology, University of Rajasthan, Jaipur, India

Thermal neutron flux, epithermal neutron flux, Isotopic Am-Be source, Foil activation method, Sensitivity

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Publication Details

Published in : Volume 3 | Issue 8 | November-December 2017
Date of Publication : 2017-12-31
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 1199-1203
Manuscript Number : IJSRST1738239
Publisher : Technoscience Academy

Print ISSN : 2395-6011, Online ISSN : 2395-602X

Cite This Article :

Dalpat Meena, S. K. Guptaa, H. S. Palsania, Narendra Jakhar, Naresh Chejara, Pushpa Meena, " Measurement of Average Thermal Neutron Flux for PGNAA Setup ", International Journal of Scientific Research in Science and Technology(IJSRST), Print ISSN : 2395-6011, Online ISSN : 2395-602X, Volume 3, Issue 8, pp.1199-1203, November-December-2017.
Journal URL : http://ijsrst.com/IJSRST1738239

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