DRI / DIRECTORY / PRAKASH GAUTAM
Prakash Gautam Profile Photo
Dr. Prakash Gautam
Assistant Research Professor, Physicist
E-Mail 
Prakash.Gautam@dri.edu
Campus 
Reno Campus
Full Resume / CV 
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Division 
Atmospheric Sciences

Keywords

Electromagnetic/ light scattering, Optical properties of aerosol particles, Aerosol characterization/instrumentation, Carbon, Atmospheric air monitoring

 

Program(s)

 

Publications
2025
Moosmüller, H., Maughan, J. B., Gautam, P., & Sorensen, C. M. (2025). A Mixing Rule for Imaginary Parts of Refractive Indices of Aerosols or Colloids in the Rayleigh Regime. J. Quant. Spectrosc. Radiat. Transfer, 331, 109254. https://doi.org/10.1016/j.jqsrt.2024.109254

Labidi, S., Maughan, J. B., Ehlers, K. M., Gautam, P., Sorensen, C. M., & Moosmüller, H. (2025). Dipole-Like Scattering by Rayleigh-Sized Particles with Medium-Matched Real and General Imaginary Part of the Refractive Index. Optics Communications, 578, 131515. https://doi.org/10.1016/j.optcom.2025.131515

Gautam, P., Ramirez, A., Bair, S., Arnott, W. P., Chow, J. C., Watson, J. G., Moosmüller, H., & Wang, X.L. (2025). Sizing Accuracy of Low-Cost Optical Particle Sensors under Controlled Laboratory Conditions. Atmosphere, 16(5), 502. MDPI. https://doi.org/10.3390/atmos16050502

Sorensen, C., Maughan, J. B., Ehlers, K., Ebini, R., Gautam, P., & Moosmüller, H. (2025). Comment on “Could We Achieve the On-Line Measurements of the Optical Fractal Dimensions of Black Carbon?” by G. Zhao, M. Hu, W. Lin, Y. Kuang, J. Sun, L. Zeng, and C. Zhao. Geophysical Research Letters, 52, e2025GL116124. AGU. https://doi.org/10.1029/2025GL116124

2024
Gautam, P., Moosmüller, H., Maughan, J. B., & Sorensen, C. M. (2024). Light Scattering from Spherical and Irregular Particles over a Wide Angular Range. Aerosol Sci. Technol., 58(9), 1053-1062. https://doi.org/10.1080/02786826.2024.2338543

Gautam, P., Moosmüller, H., Maughan, J. B., & Sorensen, C. M. (2024). Sensitivity of Backscattering to Spherical Particle Physical Properties: Size, Refractive Index, and Shape Deviations. Journal of Quantitative Spectroscopy and Radiative Transfer, 329, 109204. https://doi.org/10.1016/j.jqsrt.2024.109204

Conference Proceedings
2025
Gautam, P. (2025). “Light scattering from spherical and irregular particles over a wide angular range”. American Association for Aerosol Research (AAAR) student chapters, hosted by Washington University St. Louis, March 3, 2025-March 3, 2025. https://doi.org/10.1080/02786826.2024.2338543

(2025). Angle-Resolved Light Scattering Study of Spherical and Non-Spherical Particles. 43rd Annual Conference of the American Association for Aerosol Research: Buffalo, NY, October 13, 2025-October 17, 2025

(2025). Study of Linear Depolarization Ratios Across a Wide Range of Scattering Angles for Particles of Diverse Sizes, Shapes, and Complex Refractive Indices. 43rd Annual Conference of the American Association for Aerosol Research: Buffalo, NY, October 13, 2025-October 17, 2025

(2025). Determination of Complex Particulate Refractive Index Spectra Using Colloids. 43rd Annual Conference of the American Association for Aerosol Research: Buffalo, NY, October 13, 2025-October 17, 2025

(2025). Observation and Real-Time Monitoring of Soot Superaggregates with Small Angle Light Scattering. 43rd Annual Conference of the American Association for Aerosol Research: Buffalo, NY, October 13, 2025-October 17, 2025

(2025). CADS: The Coarse Aerosol Detection System for Characterizing Coarse Mode and Biological Particles in Real Time. 43rd Annual Conference of the American Association for Aerosol Research: Buffalo, NY, October 13, 2025-October 17, 2025

2024
Sorensen, C. M., Gautam, P., Labidi, S., Maughan, J. B., Ehlers, K., & Moosmüller, H. (2024). Measuring Complex Particulate Refractive Index Spectra. 42nd Annual Conference of the American Association for Aerosol Research: Albuquerque, NM, October 21, 2024-October 25, 2024

Maughan, J. B., Moosmüller, H., Gautam, P., & Sorensen, C. M. (2024). A New Mixing Rule for Imaginary Refractive Indices of Aerosols or Colloids in the Rayleigh Regime. 42nd Annual Conference of the American Association for Aerosol Research: Albuquerque, NM, October 21, 2024-October 25, 2024

Gautam, P., Moosmüller, H., Maughan, J. B., & Sorensen, C. M. (2024). Demonstration of Sensitivity of Backscattering to Spherical Particle Physical Properties: Size, Refractive Index, and Shape Deviations. 42nd Annual Conference of the American Association for Aerosol Research: Albuquerque, NM, October 21, 2024-October 25, 2024

2022
Watson, J. G., Chow, J. C., Green, M. C., Wang, X.L., Gautam, P., & Myers, P. J. (2022). Application of micro- and bio-sensors for forest fire smoke, Presented at I. Plymouth, NH, Desert Research Institute. MPROVE Steering Committee: Plymouth, NH, November 2, 2022