UGC Approved Journal no 63975

ISSN: 2349-5162 | ESTD Year : 2014
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Published in:

Volume 1 Issue 7
December-2014
eISSN: 2349-5162

UGC and ISSN approved 7.95 impact factor UGC Approved Journal no 63975

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Published Paper ID:
JETIR1407027


Registration ID:
140362

Page Number

727-731

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Title

Thin film detection of High Energy Materials:Optical Pumping Approach

Abstract

We present our work on High Energy Material detection based on thin film of Lithium using the phenomenon of Optical Pumping. The Lithium atoms present in the thin film are optically pumped to one of the ground hyperfine energy levels so that they can no more absorb light from the resonant light source. Now in presence of a RF signal, which quantifies the ambient magnetic field, this polarized atomic system is again randomized thus making it reabsorb the resonant light. This gives a quantified measurement of the magnetic field surrounding the thin film detector. This is then mapped to the presence of magnetic HEMs and hence the HEMs are detected. Our approach in this regard starts with verifying the stability of Lithium atoms in various solvents so as to get a suitable liquid medium to form a thin film. In this regard, various UV-visible characterization spectra are presented to finally approach a stable system for the detection. We have worked on around 10 polar and non polar solvents to see the stability criteria. UV-Visible probe has been found to be quite effective in addressing issue of hosting Lithium atoms by various solvents. Further results on the atomic system size as dispersed in the various solvents are presented. Atomic system size gives us a good quantitative estimate of the density of Lithium dispersed system in the thin film. Finally a separate atomic system under Ultra-High-Vaccum is presented to achieve optical pumping wherein the polarization and depolarization of atomic system is seen using a 670 nm diode laser system which is electronically locked using a double window Hollow cathode lamp. These both systems will finally be combined together to give the final form to the detection system. As this whole system measures relative change in magnetic field due to the presence of HEMs, it gives a more reliable and accurate detection method compared to the absolute measurement detectors.

Key Words

High Energy Particle, Detection, Optical Pumping, UV-Visible Specteoscopy

Cite This Article

"Thin film detection of High Energy Materials:Optical Pumping Approach", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.1, Issue 7, page no.727-731, December-2014, Available :http://www.jetir.org/papers/JETIR1407027.pdf

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2349-5162 | Impact Factor 7.95 Calculate by Google Scholar

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 7.95 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Cite This Article

"Thin film detection of High Energy Materials:Optical Pumping Approach", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.1, Issue 7, page no. pp727-731, December-2014, Available at : http://www.jetir.org/papers/JETIR1407027.pdf

Publication Details

Published Paper ID: JETIR1407027
Registration ID: 140362
Published In: Volume 1 | Issue 7 | Year December-2014
DOI (Digital Object Identifier):
Page No: 727-731
Country: Gachibowli, Hyderabad, Telangana, India .
Area: Physics
ISSN Number: 2349-5162
Publisher: IJ Publication


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