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	Magneto optical properties of atmospheric air molecules</div>

Dhobi Saddam Husain, Nakarmi Jeevan Joyti, Yadav Kishori, Gupta Suresh Prasad

2024 , VOLUME 24, NUMBER 3 ( may-june )

ISSN 2226-1494 (print), ISSN 2500-0373 (online)

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Nikiforov
Vladimir O.
D.Sc., Prof.

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doi: 10.17586/2226-1494-2024-24-3-375-383

Magneto optical properties of atmospheric air molecules

S. Dhobi, J. Nakarmi, K. Yadav, S. Gupta

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Dhobi S.H., Nakarmi J.J., Yadav K., Gupta S.P. Magneto optical properties of atmospheric air molecules. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2024, vol. 24, no. 3, pp. 375–383. doi: 10.17586/2226-1494-2024-24-3-375-383

Abstract

The magneto-optical properties of atmospheric air molecules describe how air molecules interact with both magnetic fields and light. Studying these properties is crucial for understanding atmospheric dynamics, enhancing remote sensing for environmental monitoring, developing new materials for sensors and optical devices, refining medical imaging techniques like Magnetic Resonance Imaging, and advancing fundamental scientific knowledge with potential practical applications. The objective of this study is to investigate the magnetic optical properties of air within a weak magnetic field ranging from 0.122 T to 0.986 T using experimental methods. The analysis focuses on the variations in transmittance across the visible spectrum with changes in magnetic field intensity. Results indicate a decrease in transmittance with increasing wavelength, demonstrating a direct correlation between transmittance and magnetic field strength. The magneto-optical properties, specifically transmittance, exhibit a decreasing trend with increasing wavelength, with minimum and maximum transmittance values recorded at 460 nm and 664.755 nm, respectively. Additionally, the transmittance of air spectrum is directly influenced by the applied magnetic field. Moreover, the intensity ratio associated with Raman spectra shift decreases with increasing Raman spectra shift, with higher intensity ratios observed in the presence of a magnetic field compared to non-magnetic conditions. Furthermore, the magnetooptical response tends to shift towards higher wavelengths with increasing magnetic field strength.

Keywords: magneto-optical properties, weak magnetic field, transmittance, visible spectrum, air molecules, Raman spectra

Acknowledgements. We extend our sincere gratitude to the institutions that have been instrumental in supporting our research endeavors. The Department of Physics at Patan Multiple Campus, Tribhuvan University, Lalitpur-44700, Nepal, has provided invaluable resources and guidance. We also acknowledge the contributions of Innovative Ghar Nepal and the Robotics Academy of Nepal, both located in Lalitpur-44700, Nepal, whose support has been crucial to our work. Additionally, we appreciate the assistance and resources provided by the Nepal Academy of Science and Technology, Khumaltar Lalitpur-44700, Nepal. These institutions have played a significant role in advancing our research efforts, and we are immensely grateful for their contributions.

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